Verb
1. be against; express opposition to;
"We oppose the ban on abortion"2. fight against or resist strongly;
"The senator said he would oppose the bill""Don't fight it!"3. oppose with equal weight or force
4. set into opposition or rivalry;
"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"5. act against or in opposition to;
"She reacts negatively to everything I say"6. be resistant to;
"The board opposed his motion"