deponent
Deponent (noun) means a person who gives sworn evidence in writing, especially in an affidavit or a deposition used in court proceedings. Example: “The deponent states that she was at home on the night in question.”
How to use deponent
Learner’s notesIn plain EnglishThe person whose sworn statement is written down.
Formal and technical: legal documents, and classical grammar.
Fill the gap
Can you complete this real example?
The _____ states that she was at home on the night in question.
Etymology
From Latin deponere 'to lay down, put aside', used in later legal Latin of laying down testimony; the grammatical sense reflects a verb having 'laid aside' its passive meaning.