Meaning of “stand up for sth/sb” - Learner’s Dictionary

stand up for sth/sb

phrasal verb with stand uk us /stænd/ verb (past tense and past participle stood)

B2 to support an idea or a person who is being criticized:

[ often reflexive ] Never be afraid to stand up for yourself.

(Definition of “stand up for sth/sb” from the Cambridge Learner’s Dictionary © Cambridge University Press)