affidavit

af-ih-DAY-vit /ˌæfɪˈdeɪvɪt/
nounC1GREGMATUPSC
legalformal

A written statement confirmed by oath or affirmation, for use as evidence in court.

Must be written down and sworn before an authorized person (like a notary public) to carry legal weight.

The story behind the word. Affidavit is a Latin word meaning 'he has pledged his faith.' In medieval times, legal documents written in Latin used this word to state that a person had sworn a solemn oath of truthfulness before an ecclesiastical or civil authority.

Word relationships

  • deposition: A deposition is out-of-court oral testimony recorded for later use, while an affidavit is a written statement sworn without cross-examination.
  • declaration: A declaration is a formal statement but does not always require a religious or legal oath before a notary.

Commonly confused with

  • testimony: Testimony is typically spoken aloud in a courtroom, whereas an affidavit is always a written document.

Collocations

  • signed affidavit
  • sworn affidavit
  • submit an affidavit
  • affidavit of support

Example sentences

  • "The witness signed an affidavit confirming that she saw the suspect leave the building." Court proceedings
  • "He submitted a financial affidavit to prove he had the funds to support his visa application." Financial verification

Memory hook

An affidavit is a document that shows you 'afford to be honest' because you are under oath. Affidavit = David's sworn statement.

When not to use

Do not use for oral testimony or casual written promises; it must be a sworn, written document.

Fun facts

  • Because affidavits are signed under penalty of perjury, lying on an affidavit carries the exact same criminal penalties as lying on the witness stand in a courtroom.

Related words

attest, certificate

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