go against

phrasal verb

went against; gone against; going against; goes against

Definition of go against

1 : to not agree with (something) I won't do anything that goes against my conscience/beliefs/principles. values that go against those of society

2 : to oppose (someone or something) He was surprised when some of his former supporters went against him. He was reluctant to go against his parents' wishes.

3 : to compete against (a player or team) in a contest or game The Red Sox will be going against the Yankees in tonight's game.

4 : to not be good for (someone) : to not produce the result that is wanted by (someone) Everything seemed to be going against her but she didn't give up hope. The verdict went against the defendant.