The spelling of the word "affidature" can be a bit tricky. In IPA phonetic transcription, it is pronounced /əˌfɪdəˈtjʊər/, with emphasis on the second syllable. The word is derived from the Latin term "affidavit" which means a written declaration made under oath. The suffix "-ure" is added to indicate that it is a noun. Despite its roots in Latin, "affidature" is not commonly used in contemporary English, so its spelling may be unfamiliar to some.