High School Vocabulary
353,744 words and 27,916 expressions at the high school level.
A surname from Irish.
plural of O'Banion
A surname.
plural of O'Bannon
plural of O'Barr
plural of O'Bear
A surname from Irish.
plural of O'Beirne
A surname from Irish.
plural of O'Berry
Alternative spelling of Obiden.
A surname.
A surname.
A surname from Irish.
Alternative form of Obummer.
A surname from Irish.
A surname.
A surname.
plural of O'cocker
A surname from Irish.
A surname from Irish.
plural of O'Conner
A patrilineal surname from Irish.
A surname
A surname from Irish.
A surname from Irish.
plural of O'Donald
A surname from Irish.
A surname from Irish.
plural of O'Donnel
A surname from Irish, variant of O'Donoghue.
A surname from Irish.
plural of O'Dowd
A surname from Irish.
plural of O'Dwyer
simple past of o'ercome
Alternative form of overcome.
third-person singular simple present indicative of o'ercome
Contraction of overhead.
Contraction of overjoy.
simple past and past participle of o'erjoy
third-person singular simple present indicative of o'erjoy
simple past and past participle of o'erlay
Alternative form of overlay.
third-person singular simple present indicative of o'erlay
Contraction of overleap
Contraction of overload.
third-person singular simple present indicative of o'erload. Contraction of overloads.
Contraction of overlook.
Alternative form of overnight.
simple past of o'erthrow
Alternative form of overthrow.
A surname from Irish.
plural of O'Fallon
A surname.
A surname from Irish.
plural of O'Flynn
plural of O'Gara
A surname.
plural of O'Garro
A surname from Irish.
plural of O'Gorman
A surname from Irish.
plural of O'Grady
A surname from Irish.
plural of O'Guinn
plural of O'Guin
A surname.
A surname from Irish.
plural of O'Halpin
plural of O'Hare
A surname from Irish.
plural of O'Harra
A surname.
A surname from Irish.
plural of O'Hurley
A surname from Irish.
plural of O'Keefe
A surname from Irish.
plural of O'Keeffe
An Irish surname.
Pronunciation spelling of Orlando, in many senses.
plural of O'Lear
A surname from Irish.
A surname.
A surname from Irish.
plural of O'Mara
plural of O'Mary
A surname from Irish.
plural of O'Meara
A surname from Irish.
A person of Tohono O'odham (formerly Papago), Akimel O'odham (formerly Pima), or other O'odham ancestry.
plural of O'odham
A surname from Irish.
plural of O'Quinn
plural of O'Quin
A surname from Irish [in turn originating as a patronymic] from Reilly.
simple past of o'rethrow
Obsolete spelling of o'erthrow, alternative form of overthrow.
A surname from Irish.
A surname from Irish.
A surname from Irish.
plural of O'Rourke
plural of O'Shea
A surname.
plural of O'Such
An Irish surname.
plural of O'Ward
A surname, variant of Auyeung.
A surname from Cantonese.
Alternative form of Echeng.
plural of o-face
In Proto-Indo-European linguistics, an ablaut form of a Proto-Indo-European root, characterised by the presence of the */o/ vowel phoneme in place of */e/.
A subject-based qualification superseded in England by GCSE, but still available internationally throughout the Commonwealth of Nations.
plural of O-level
plural of O-lock
Abbreviation of oracle machine.
A random fortune on a strip of paper, available from Shinto shrines and Buddhist temples in Japan in exchange for a small offering.
Gymkhana.
Alternative form of ooaa.
plural of O-ring
plural of o-scope
Shaped like the capital letter "O".
plural of O-shot
plural of o-stem
Alternative form of Otsukimi.
plural of O-Week
plural of o-word
plural of O.P.P.
Characteristic of or resembling an oaf; clumsy, stupid.
in an oafish manner
oafish
plural of Oahuan
Any of various lycaenid butterflies of the genus Arhopala, of Asia and Australasia.
plural of oak-blue
Alternative spelling of oak gall.
plural of oak-gall
A flexible material akin to thick paper.
plural of oak-tag
A small village and civil parish in Staffordshire Moorlands district, Staffordshire, England (OS grid ref SK0544).
The bark of the oak tree, often specifically as a source of tannic acid; tan.
plural of Oakboy
A city in Stanislaus County, California.
A suburb of the City of Clarence, Hobart, Tasmania, Australia.
A surname.
A grove of oaks.
plural of Oakes
A surname
A suburb of Perth, Western Australia, Australia.
Alternative spelling of oak gall.
plural of oakgall
A small village in Haslington parish, Cheshire East district, Cheshire, England (OS grid ref SJ7654).
A village in Ashwick parish, Mendip district, Somerset, England (OS grid ref ST6347).
A suburb of Sydney in the Blacktown council area, New South Wales, Australia.
superlative form of oaky: most oaky
The property of being oaky
A village in Oakington and Westwick parish, South Cambridgeshire district, Cambridgeshire, England (OS grid ref TL4164).
The eighth-largest city in California, United States, and the county seat of Alameda County.
A native or inhabitant of Oakland, California.
A town in the Riverina area of southern New South Wales, Australia.
The leaf of the oak.
plural of oakleaf
A suburb in south-east Melbourne, Victoria, Australia.
Having no oak trees.
plural of oaklet
Resembling or characteristic of an oak or its wood.
A small or young oak tree.
plural of oakling
A village in Delamere and Oakmere parish, Cheshire West and Chester district, Cheshire, England (OS grid ref SJ5769).
A village and special taxing district in Montgomery County, Maryland.
Evernia prunastri, a lichen found primarily on oak trees and used in perfume.
plural of oakmoss
The quality of being oak, or of being an oak tree.
A city in Lane County, Oregon, United States.
plural of oaktag
A village in Oakthorpe and Donisthorpe parish, Leicestershire, England (OS grid ref SK321981).
Alternative form of oak tree.
plural of oaktree
A locality in the Shire of Gannawarra, northern Victoria, Australia
A suburb of Sydney in the City of Hawkesbury, New South Wales, Australia.
Articles made from oak.
A wood populated with oak trees.
plural of oakwood
A caterpillar of a moth in the genus Anisota.
plural of oakworm
A village in the Worth Valley, in Keighley parish, Metropolitan Borough of Bradford, West Yorkshire, England (OS grid ref SE0338).
An apocytial oogonium that forms oospores by free cell-formation, as in Saprolegnieae.
Alternative form of oarhole.
plural of oar-hole
Alternative form of oar blade.
plural of oarblade
A large, greatly elongated, type of fish of the family Regalecidae.
plural of oarfish
a slot or opening in the side of a galley or ship through which an oar is fitted
plural of oarhole
Archaic form of ovaritis.
Without oars.
Resembling or characteristic of an oar.
A usually U-shaped device attached to the gunwale of a rowboat to hold the oars in place while rowing.
plural of oarlock
plural of oarlop
A person who rows a boat, either alone or with others.
plural of oarsman
A female oarsman.
plural of oarswoman
A brown alga, Laminaria digitata, found on exposed shores.
plural of oarweed
plural of oasis
Lacking oases.
Resembling or characteristic of an oasis.
of or relating to an oasis
Alternative spelling of oast house.
Alternative form of oatlike.
Alternative form of oat opera.
bread made with oatmeal
Any of many flat biscuits, or cakes, made from oatmeal.
plural of oatcake
A film depicting adventures of characters in the American Old West; a western.
oatmeal
A flake made from oat.
plural of oatflake
Arrhenatherum species
A ring (particularly an arm ring) on which oaths are sworn.
Capable of having an oath administered to one: fit to be sworn.
Bound by an oath.
Inclined to swear oaths, or curse.
present participle and gerund of oath
Without an oath or oaths.
A minced oath.
plural of oathlet
Resembling or characteristic of an oath.
One who makes an oath.
A surname from Dutch.
plural of Oathout
Synonym of The Bang That Was Promised.
Bound by an oath.
One who takes an oath.
A breakfast cereal sold in the United Kingdom, consisting of biscuits of compressed oats.
superlative form of oaty: most oaty
The state or condition of being oaty.
plural of Oatis
Silage made from oats: oat silage.
A southern suburb of Harrogate, North Yorkshire, England (OS grid ref SE3053).
Without oats.
Resembling an oat or oats.
plural of oatmeal
Resembling or full of oatmeal.
Alternative spelling of oat milk.
plural of oatmilk
Straw from the oat plant.
plural of Oatway
Relating to, or from, the Mexican state of Oaxaca.
plural of Oaxacan
plural of Oaxaca
A town in Yautepec, Morelos, Mexico.
Alternative form of OB-GYN.
plural of OB-Gyne
plural of ob-gyn
Synonym of Ob-Ugric.
Of or pertaining to a subgroup of languages in the Uralic language family, including Khanty and Mansi.
plural of OB/GYN
A natural compound present in citrus fruits that has antiinflammatory and anticancer properties
A book of the Old Testament of the Bible, and of the Tanakh.
Alternative form of Obamacan.
Alternative form of Obamacon.
A supporter of Barack Obama, the 44th president of the United States.
plural of Obamabot
plural of Obamacan
Alternative letter-case form of ObamaCare.
plural of Obamacon
A Democratic supporter of Barack Obama.
Alleged attempts by President Barack Obama and those in his administration to sabotage Donald Trump's candidacy and administration through various illegitimate means, according to a conspiracy theory promoted by Trump.
The philosophy and politics espoused by former United States president Barack Obama.
A supporter of US President Barack Obama, especially a member of his team.
plural of Obamaite
Alternative form of Obamamania.
plural of Obamaton
Alternative form of Obamaite.
plural of Obamite
Alternative form of Obamaitis.
Alternative form of O'Bansawin.
Alternative form of O'Bansawin.
plural of obasan
The role or status of an oba.
plural of obaship
An experimental drug candidate for the treatment of various cancers.
a Bavarian cheese delicacy. It is prepared by mixing one third aged camembert, one third aged Romadur cheese (60%) and one third butter, and seasoning with onions and spices.
Any organism of the clade Obazoa.
plural of obazoan
Synonym of bobbatlu (“sweet flatbread”).
A religious supporter of Obbe Philips (ca. 1500–1568), one of the early founders of Dutch Anabaptism.
plural of Obbenite
plural of obbligato
An obbligato section; a prominent countermelody, often written to be played or sung above the principal theme (in a higher pitch range).
A municipality of Brussels, Belgium
plural of obcell
Inversely clavate; thicker at the base.
of a fruit, conical in shape and attached to the stalk by the pointed end.
Alternative form of obconic.
Of a reversed cordate shape; heart-shaped but attached to the stalk by the pointed end.
In the shape of an equilateral triangle with the apex at the base.
Triangular and attached to the stem via a tip.
simple past and past participle of obduct
present participle and gerund of obduct
The act of drawing or laying over, as a covering.
third-person singular simple present indicative of obduct
The state of being obdurate, intractable, or stubbornly inflexible.
hardness; stubbornness
unyieldingly stubborn
Stubbornly persistent, generally in wrongdoing; refusing to reform or repent.
simple past and past participle of obdurate
third-person singular simple present indicative of obdurate
A rigid part of a sigmoidoscope or similar device
simple past and past participle of obdure
third-person singular simple present indicative of obdure
present participle and gerund of obdure
simple past and past participle of obeah
present participle and gerund of obeah
Alternative form of obiism.
A male practitioner of obeah.
plural of obeahman
plural of obeast
Any medicine that is a placebo.
plural of obeche
plural of Obecian.
obedient
Obedience, the quality of being obedient.
plural of obedient
A surname from Ukrainian.
Demonstration of an obedient attitude, especially by bowing deeply; a deep bow which demonstrates such an attitude.
Alternative form of obeisance.
Courteously deferential and respectful.
Obsolete form of obeisant.
Relating to, pertaining to, or situated near, the obelion.
A city in Panevėžys, Lithuania.
plural of obelia
A craniometric point on the sagittal suture between the parietal foramina near the lambdoid suture.
plural of obelion
Archaic spelling of obelisk.
resembling, or pertaining to, an obelisk.
In the form of an obelisk.
plural of obelisc
Alternative spelling of obelize.
simple past and past participle of obelise
third-person singular simple present indicative of obelise
present participle and gerund of obelise
A tall, square, tapered, stone monolith topped with a pyramidal point, frequently used as a monument.
simple past and past participle of obelisk
plural of obelisk
The practice of annotating manuscripts with marks set in the margins.
plural of obelism
To mark (a written or printed passage) with an obelus; to judge as spurious or doubtful.
simple past and past participle of obelize
third-person singular simple present indicative of obelize
present participle and gerund of obelize
plural of obelus
plural of obento
A surname from German.
plural of Oberdorf
plural of oberek
A surname from German.
The yeast that forms at the top surface of the vat.
A town in Luxembourg, in the commune of Differdange, in the canton of Esch-sur-Alzette.
plural of Oberle
A surname.
A surname.
plural of Oberly
A municipality in Passau district, Bavaria, Germany, across the Danube from Austria.
plural of Oberoi
Of or relating to the Shakespearean character Oberon.
A municipality of Neuwied district, Rhineland-Palatinate, Germany.
A municipality in Aargau canton, Switzerland.
A village in Obergoms municipality, Goms district, Valais canton, Switzerland.
discrimination against very fat people
In an obese manner.
obesity
superlative form of obese: most obese
A particular steroid glycoside.
simple past and past participle of obesify
third-person singular simple present indicative of obesify
To become or to make obese
plural of obesity
A chemical or other factor that disturbs the body's normal processes, causing it to tend toward obesity.
plural of obesogen
An oligopeptide sequence, present in ghrelin, that binds to a specific orphan receptor
Capable of being obeyed.
obedience
second-person singular simple past indicative of obey
plural of obeyer
second-person singular simple present indicative of obey
third-person singular present simple form of obey
present participle and gerund of obey
obediently
Obsolete form of obeisant.
Obsolete form of obeisant.
simple past and past participle of obfirm
present participle and gerund of obfirm
third-person singular simple present indicative of obfirm
The act or process of obfuscating, or obscuring the perception of something; the concept of concealing the meaning of a communication by making it more confusing and harder to interpret.
obfuscation
dark; obscure; shadowy
An oxime used to treat nerve gas poisoning.
A thin rope attached to an obi.
plural of obijime
plural of Obispo
plural of obiter
Of or relating to obits.
Having the form of an object or objects; pertaining to the physical form of something; material.
Synonym of objector.
simple past and past participle of object
A person whom somebody else objects to.
plural of objectee
second-person singular simple present indicative of object
third-person singular simple present indicative of object
Of or relating to the presence and employment of object in a programming language.
The act or process of objectifying something intangible.
To make (something, such as an abstract idea) possible to be perceived by the senses.
present participle and gerund of object
An approach to poetry in which the poet is regarded as just one object among the other objects in existence, rather than a subject through which they are mediated.
An objectivist.
Of or relating to a material object, actual existence or reality.
To turn into, or treat as, an object; to objectify.
plural of objector
A woman who objects; a female objector; compare objectress.
plural of object
Relating to, or represented as an object
Attracted to inanimate objects, especially sexually or romantically, but can be other types such as platonic or familial.
plural of objectum
One who makes objection; an objector.
simple past and past participle of objure
third-person singular simple present indicative of objure
To rebuke or scold strongly.
present participle and gerund of objure
Of or pertaining to oblasts.
plural of oblast
plural of oblast
A person dedicated to a life of religion or monasticism, especially a member of an order without religious vows or a lay member of a religious community.
simple past and past participle of oblate
In an oblate manner.
plural of oblate
present participle and gerund of oblate
The offering of worship, thanks etc. to a deity.
plural of oblation
Of or pertaining to oblation.
Of or pertaining to oblation; oblational
An oblate spheroid; a figure described by the revolution of an ellipse about its minor axis.
To delight; to please greatly.
simple past and past participle of obleege
third-person singular simple present indicative of obleege
present participle and gerund of obleege
simple past and past participle of oblige
Acknowledging, or complying with, obligation; trustworthy.
A formal ball which two characters (usually Fox Mulder and Dana Scully) are required to attend as a set-up in romantic fan fiction.
plural of obligala
The status of being an obligant.
One who binds themselves to another to pay or to perform something.
plural of obligant
plural of obligatum
simple past and past participle of obligate
A person who is obligated by law to do something
third-person singular simple present indicative of obligate
plural of obligato
Alternative spelling of obbligato.
One who establishes an obligation under law
Imposing obligation, legally, morally, or otherwise; binding; mandatory.
plural of obligato
That which is, or must be, granted.
Under an obligation to do something.
gratefully; indebtedly
The party owed an obligation by another party, the obligor.
plural of obligee
One who, or that which, obliges.
plural of obliger
third-person singular simple present indicative of oblige
second-person singular simple present indicative of oblige
third-person singular simple present indicative of oblige
Happy and ready to do favours for others.
plural of obliging
The party bearing a legal obligation to another party (the obligee).
plural of obligor
oblique with maximization
oblique with minimization
Not erect or perpendicular; not parallel to, or at right angles from, the base.
simple past and past participle of oblique
In an oblique manner; sideways.
comparative form of oblique: more oblique
Collectively, the abdominal muscles responsible for rotation of the trunk.
superlative form of oblique: most oblique
plural of obliquus
oblique
present participle and gerund of oblique
The quality of being oblique in direction, deviating from the horizontal or vertical; or the angle created by such a deviation.
An obliquus muscle; a muscle running obliquely.
To destroy (someone or something) completely, leaving no trace; to annihilate, to wipe out.
The total destruction of something.
Of or relating to oblivion.
To forget; to wipe from existence.
plural of oblivion
plural of obliviot
Lacking awareness; unmindful; unaware, unconscious of.