- affidavit (n.)
[affidavit 词源字典]
- 1590s, from Medieval Latin affidavit, literally "he has stated on oath," third person singular perfective of affidare "to trust," from Latin ad- "to" (see ad-) + fidare "to trust," from fidus "faithful," from the same root as fides "faith" (see faith). So called from being the first word of sworn statements.[affidavit etymology, affidavit origin, 英语词源]