Definify.com

Webster 1913 Edition

Noun.

[From p. pr. of OF.

afier

, LL.

affidare

. See

(Law)

One who makes an affidavit.

[U. S.]

Burrill.

Syn. – Deponent. See

affiant ‎(plural affiants)

(law) The individual witness whose statement is contained in an affidavit or sworn deposition.
Further affiant sayeth naught. (A centuries-old statement that is still used on some legal documents as the final declaration prior to the affiant's signature.)

affiant in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913 (etymology)