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."A written declaration upon oath made before an authorized official. How to pronounce AFFIDAVIT. How to say AFFIDAVIT. This video shows you How to Pronounce Affidavit, pronunciation guide. Easily switch and navigate between the 15 biggest Oxford dictionaries along with advanced search and learning tools. Having trouble hearing a pronunciation?