against (someone or something)

against (someone or something)

1. In opposition to or defiance of someone or something. This plan goes against my principles, so I cannot be a part of it. Are you willing to stand against such a powerful company in the courts?
2. In competition with someone or something. I'm up against a three-time state champion in the first bracket of the tournament.
3. To someone or something's detriment or disadvantage. I'm shocked that the judge ruled against us.
Farlex Dictionary of Idioms.

*against someone or something

 
1. in opposition to someone or something; in competition with someone or something. (*Typically: be ~; run ~; stand ~.) I am against everything you stand for. She ran against me in the election.
2. to the disadvantage of someone or something; in opposition to someone or something. (*Typically: be ~; go ~; run ~; turn ~.) When did the trial go against us?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • against
  • get up against
  • get up against (someone or something)
  • clash
  • clash against
  • clash against (someone or something)
  • fortify (someone or something) against (something) with (something)
  • avenge (oneself) against (someone or something)
  • build a case against (someone or something)
  • graze against