acute
Brief, quick, short.
High or shrill.
Intense; sensitive; sharp.
Urgent.
With the sides meeting directly to form an acute angle (at an apex or base).
Less than 90 degrees.
Having all three interior angles measuring less than 90 degrees.
Of an accent or tone: generally higher than others.
Sharp, produced in the front of the mouth. (See Grave and acute on Wikipedia.Wikipedia)
Of an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage.
Thesaurus
Sound Patterns & Rhymes
Alliteration
Words starting with the same consonant sound — used in poetry and prose to create rhythm, emphasis, and memorable phrasing (e.g. “Peter Piper picked”)
Assonance
Words sharing similar vowel sounds regardless of starting letter — creates internal melody in writing