All co-opt antonyms

verb co-opt

• reject — to refuse to have, take, recognize, etc.: to reject the offer of a better job.
• repudiate — to reject as having no authority or binding force: to repudiate a claim.
• deny — When you deny something, you state that it is not true.
• refuse — to decline to accept (something offered): to refuse an award.
• dispute — to engage in argument or debate.
• let go — to move or proceed, especially to or from something: They're going by bus.