All authenticate antonyms
au·then·ti·cate
A a verb authenticate
- deny — When you deny something, you state that it is not true.
- disprove — to prove (an assertion, claim, etc.) to be false or wrong; refute; invalidate: I disproved his claim.
- reject — to refuse to have, take, recognize, etc.: to reject the offer of a better job.
- contradict — If you contradict someone, you say that what they have just said is wrong, or suggest that it is wrong by saying something different.
- disavow — to disclaim knowledge of, connection with, or responsibility for; disown; repudiate: He disavowed the remark that had been attributed to him.
- invalidate — to render invalid; discredit.
- repudiate — to reject as having no authority or binding force: to repudiate a claim.
- disapprove — to think (something) wrong or reprehensible; censure or condemn in opinion.
- discredit — to injure the credit or reputation of; defame: an effort to discredit honest politicians.
- oppose — to act against or provide resistance to; combat.