aver \uh-VUR\,transitive verb
[inflected forms: averred; averring]:
1. To affirm with confidence; to declare in a positive manner, as in confidence of asserting the truth.
2. (Law) To assert, claim, or declare as a fact.
Aver is from Old French-Medieval French averer, from Medieval Latin adverare, to confirm as authentic, from Latin ad-, ad- + Medieval Latin verare, from Latin verus, true. Other words deriving from verus are very, which sometimes has the sense of "true"; verify, to prove the truth of; and verdict, a decision or judgment, literally a "true-saying" (verus + dictum, saying).