A voluntary and written ex parte statement of facts signed and the truth of its content affirmed or sworn to by the declarant before a notary public or another officer authorized to administer oaths. See also affirmation.
- sworn statement
Other Word Forms of Affidavit
Origin of Affidavit
From Medieval Latin affidavit (“he has sworn”), the third person singular perfect tense of affido (“swear”), from fīdō, ultimately from Proto-Indo-European *bʰidʰ-, zero-grade of Proto-Indo-European *bʰeydʰ- (“to command, to persuade, to trust”). Cognate to fidelity and faith (same Latin root), but not to affirm (shared Latin ad- prefix, but different Latin and Proto-Indo-European roots).
Medieval Latin affīdāvit from third person sing. perfect tense of affīdāre to pledge affiance
From American Heritage Dictionary of the English Language, 5th Edition
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