big up
verb
RareNot in standard dictionaries
1
To increase one's muscle mass.
2
To become big.
3
To behave confidently and proudly.
4
To proclaim or exaggerate the importance of; to promote.
Thesaurus
#informal#slang
To increase one's muscle mass.
To become big.
To behave confidently and proudly.
To proclaim or exaggerate the importance of; to promote.