AFFIRM AS TRUE is a phrase that is used to express agreement or acceptance of something as being true. The four crossword solutions for this term are AVER (4 letters), AVOUCH (6 letters), AVOW (4 letters), and ATTEST (6 letters). AVER means to assert or declare positively, AVOUCH is to declare with assurance or confidence, AVOW is to declare openly and without shame, and ATTEST is to bear witness to or affirm the truth of something.