What does deponent mean?
A deponent is a person who gives testimony under oath, most commonly the individual whose statement is recorded in a legal document such as a deposition or affidavit. In courtroom and notarial contexts, the deponent swears to the truth of their account and typically signs the document to certify it. The word also has a specialized grammatical meaning: a deponent verb, found in Latin, Greek, and some other languages, is one that takes passive endings while carrying active meaning — Latin 'loquor', meaning 'I speak', is a classic example. Both senses derive from the same source: Latin 'deponere', meaning 'to lay aside or lay down', since a deponent lays down their testimony, and grammarians described these verbs as having laid aside their active forms. The word is decidedly formal, appearing chiefly in legal writing and classical scholarship rather than everyday conversation, but it remains precise and current within both fields.
A person who testifies or makes a sworn statement, especially the witness whose evidence is set out in a deposition or affidavit.
"Each deponent was required to swear before the commissioner that the contents of the statement were true."
Chiefly legal and formal register; often encountered in the fixed phrase 'the said deponent'.
A deponent verb: a verb having passive forms but active meaning, as with many Latin and Greek verbs.
"The teacher explained that 'sequor', meaning 'I follow', is a deponent."
Used almost exclusively in classical linguistics; sometimes treated as a shortening of 'deponent verb'.
Standard plural; used for multiple witnesses or, in grammar, for multiple deponent verbs.
"All three deponents gave consistent accounts of the incident."
In Latin, 'deponent verbs' look completely passive but act entirely active — grammar's great impostors.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of deponent
Deponent comes from the Latin 'deponens', the present participle of 'deponere', meaning 'to put down, lay aside'. It entered English in the late sixteenth or early seventeenth century. The grammatical sense arose because Roman grammarians described certain verbs as having 'laid aside' their active forms while retaining active meanings, and the legal sense developed from the same idea of laying down one's testimony. The root also underlies English words such as 'depose', 'deposit', and 'compose', all built on the Latin verb 'ponere', 'to place'.
How deponent is actually used
Predominantly formal and technical. The legal sense appears mainly in court documents and affidavits, where the phrase 'the said deponent' is conventional. The grammatical sense is used almost exclusively by students and scholars of classical languages.
Easily confused with deponent
'Dependent' means relying on someone or something else, while 'deponent' refers either to a person giving sworn testimony or, in grammar, to a verb with passive form but active meaning.