Example : We oppose the ban on abortion.

Example : The senator said he would oppose the bill.
Don't fight it!.

Synonyms : defend, fight, fight back, fight down

Synonyms : counterbalance

Example : Let them match their best athletes against ours.
Pit a chess player against the Russian champion.
He plays his two children off against each other.

Synonyms : match, pit, play off

Example : She reacts negatively to everything I say.

Synonyms : react

Example : The board opposed his motion.

Synonyms : contradict, controvert