Abbott-Smith Manual Greek Lexicon
ἄφωνος (G880)
4 ἄφωνος , -ον ( φωνή ), [in LXX: Is 53:7 ( אלם ni.), Wi 4:19 , II Mac 3:29 *;] dumb , speechless : Ac 8:32 (LXX) ; of idols (MM, s.v.), I Co 12:2 ; of beasts, II Pe 2:19 ; τοσαῦτα γένη φωνῶν καὶ οὐδὲν ἄ. —so many kinds of voices and none voiceless, i.e. without signification, unintelligible : I Co 14:10 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain