Meaning of “go against sb” - Learner’s Dictionary

go against sb

phrasal verb with go uk us /ɡəʊ/ verb [ I ] (present participle going, past tense went, past participle gone)

If a decision or vote goes against someone, they do not get the result that they needed:

The judge's decision went against us.

(Definition of “go against sb” from the Cambridge Learner’s Dictionary © Cambridge University Press)