| Noun | 1. | cogent evidence - any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it"evidence, grounds - your basis for belief or disbelief; knowledge on which to base belief; "the evidence that smoking causes lung cancer is very compelling" confirmation, substantiation, verification, check - additional proof that something that was believed (some fact or hypothesis or theory) is correct; "fossils provided further confirmation of the evolutionary theory" | |