How to pronounce AFFIDAVIT. How to say AFFIDAVIT.Affidavit definition: . See examples of AFFIDAVIT used in a sentence. This video shows you How to Pronounce Affidavit, pronunciation guide. Having trouble hearing a pronunciation? The term is pronounced as "afuhDAYvit. " Breaking it down: "af" as in "after," "uh" as in "umbrella," "DAY" with emphasis, and "vit" rhymes with "fit."