What is "affy"

Affy \Af*fy"\, v. t. [imp. & p. p. Affied; p. pr. Affying.]

1. To confide (one's self to, or in); to trust. [Obs.]

2. To betroth or espouse; to affiance. [Obs.]
   --Shak.

3. To bind in faith. [Obs.]
   --Bp. Montagu.

Affy \Af*fy"\, v. i. To trust or confide. [Obs.]
--Shak.

Etymology 1 vb. 1 (context obsolete intransitive English) To trust ((term: in) someone or something); to rely ((term: on)). (14th-17th c.) 2 (context obsolete transitive English) To promise to marry (someone); to be engaged to. (16th-17th c.) Etymology 2

n. (context slang English) An affidavit to be signed by a contest winner to confirm eligibility.