go against something/someone
— phrasal verb with go us/ɡoʊ/verb present tense goes, present participle going, past tense went /went/, past participle gone /ɡɔn, ɡɑn/
to oppose or be in disagreement with something or someone:
What you’re asking me to do goes against everything I believe in.
Anytime they go against each other, you know it’s going to be a good fight.