The crossword solution for the term 'confidently affirm' is AVER, which is a four-letter word. AVER is a verb that means to state something confidently and positively, usually as a declaration or affirmation. It is derived from the Latin verb 'averare, ' which means to declare with assurance. AVER is often used in legal contexts, where it is used to describe a statement made with certainty and conviction.