affidavit

noun

af·​fi·​da·​vit ˌa-fə-ˈdā-vət How to pronounce affidavit (audio)
: a sworn statement in writing made especially under oath or on affirmation (see affirmation sense 2) before an authorized magistrate or officer
The witness's affidavit was presented to the court as evidence.

Did you know?

Promises, Promises: The History of Affidavit, Affiance, & Fiancé

Affidavit refers to a written promise, and its Latin roots connect it to another kind of promise in English. It comes from a past tense form of the Latin verb affidare, meaning “to pledge”; in Latin, affidavit translates to “he or she has made a pledge.”

Affidare is also the root of affiance, an archaic English noun meaning “trust, faith, confidence,” “marriage contract or promise,” or a meaning that has completely fallen from use, “close or intimate relationship.” More familiar to modern English speakers is the verb affiance, meaning “to promise in marriage” or “to betroth.” It usually appears as a fancy-sounding participial adjective:

I like to give affianced friends a copy of Rebecca Mead’s book “One Perfect Day,” which exposes the ridiculous wedding industry.
—Mollie Hemingway, The Federalist, 7 October 2014

Affiance came through French to English in the 14th century, and, nearly 500 years later, the related French words fiancé and fiancée were added to English. Etymologically speaking, a fiancé or fiancée is a “promised one.”

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In Latin, affidavit means "he (she) has sworn an oath", and an affidavit is always a sworn written document. If it contains a lie, the person making it may be prosecuted. Affidavits are often used in court when it isn't possible for someone to appear in person. Police officers must usually file an affidavit with a judge to get a search warrant. Affidavits (unlike similar signed statements called depositions) are usually made without an opposing lawyer being present and able to ask questions.

Examples of affidavit in a Sentence

We have a signed affidavit stating that the two men were seen entering the building.
Recent Examples on the Web The victims, identified in an affidavit only as residents of Brazil, traveled to Los Angeles in May 2023 to attend a fashion event, FBI Special Agent Gary Wallace wrote. Matthew Ormseth, Los Angeles Times, 2 Apr. 2024 According to the affidavit: Police confirmed marijuana on the property as early as July 2021, using criminal informants and other forms of surveillance. Frank E. Lockwood, arkansasonline.com, 30 Mar. 2024 The documents summarized these ideas but the plans were never put in place, the affidavit states. Jonathan O'Connell, Washington Post, 26 Mar. 2024 The detail, included in an affidavit prepared by a federal agent, further suggests there may be others involved in the shooting who have not been charged with a crime. Bill Lukitsch, Kansas City Star, 25 Mar. 2024 Gooch's body was found without her head, according to an autopsy cited in in the affidavit, and with a portion of her spine missing. Samira Asma-Sadeque, Peoplemag, 25 Mar. 2024 During the pass, the agent spotted Meade crouching low, as if to avoid being seen, in the passenger seat of a pickup driven by Huber, authorities allege in the affidavit. Alicia Victoria Lozano, NBC News, 23 Mar. 2024 Mitchell's office confirmed receipt of the Cotton affidavit and said Borrelli did not ask for an investigation. Mary Jo Pitzl, The Arizona Republic, 20 Mar. 2024 According to the affidavit, investigators found video evidence on Kaitlynn Williams’ cell phone dated Dec. 2 that showed the teen allegedly standing in his bedroom with athletic tape around his wrists. Christine Pelisek, Peoplemag, 20 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'affidavit.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

borrowed from Medieval Latin affīdāvit "he/she has made a pledge," third person singular perfect indicative active of affīdāre — more at affiance entry 1

First Known Use

1515, in the meaning defined above

Time Traveler
The first known use of affidavit was in 1515

Dictionary Entries Near affidavit

Cite this Entry

“Affidavit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/affidavit. Accessed 17 Apr. 2024.

Kids Definition

affidavit

noun
af·​fi·​da·​vit ˌaf-ə-ˈdā-vət How to pronounce affidavit (audio)
: a sworn statement in writing

Legal Definition

affidavit

noun
af·​fi·​da·​vit ˌa-fə-ˈdā-vət How to pronounce affidavit (audio)
: a sworn statement in writing made especially under oath or on affirmation before an authorized magistrate or officer compare deposition, examination
Etymology

Medieval Latin, he/she has pledged faith, third singular perfect of affidare see affiant

More from Merriam-Webster on affidavit

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