Defn: A testifier.

TESTIFIER
Tes"ti*fi`er, n.

Defn: One who testifies; one who gives testimony, or bears witness to prove anything; a witness.

TESTIFY
Tes"ti*fy, v. i. [imp. & p. p. Testified; p. pr. & vb. n.
Testifying.] Etym: [OF. testifier, L. testificari; testis a witness +
-ficare (in comp.) to make. See -fy, and cf. Attest, Contest, Detest,
Protest, Testament.]

1. To make a solemn declaration, verbal or written, to establish some fact; to give testimony for the purpose of communicating to others a knowledge of something not known to them. Jesus . . . needed not that any should testify of man, for he knew what was in man. John ii. 25.

2. (Law)

Defn: To make a solemn declaration under oath or affirmation, for the purpose of establishing, or making proof of, some fact to a court; to give testimony in a cause depending before a tribunal. One witness shall not testify against any person to cause him to die. Num. xxxv. 30.

3. To declare a charge; to protest; to give information; to bear witness; — with against. O Israel, . . . I will testify against thee. Ps. l. 7. I testified against them in the day wherein they sold victuals. Neh. xiii. 15.

TESTIFY
Tes"ti*fy, v. t.

1. To bear witness to; to support the truth of by testimony; to affirm or declare solemny. We speak that we do know, and testify that we have seen; and ye receive not our witness. John iii. 11.