convince

Etymology

Borrowed from Latin convincō (“I refute, prove”), from con- + vincō (“I conquer, vanquish”). Doublet of convict. Displaced native Old English oferreċċan.

verb

1. To make someone believe, or feel sure about something, especially by using logic, argument or evidence.
   I wouldn't have or do something, unless I'm convinced that it's good.
   Such convincing proofs and assurances of it as might enable them to convince others. 1718, Francis Atterbury, sermon preached on Easter Day at Westminster Abbey
2. To persuade.
3. (obsolete, transitive) To overcome, conquer, vanquish.
4. (obsolete, transitive) To confute; to prove wrong.
5. (obsolete, transitive) To prove guilty; to convict.