G0880
ἄφωνος
mute
ἀφωνος, -ον (φωνή) [in LXX: Isa.53:7 (עָלַם ni.), Wis.4:19, 2Ma.3:29 * ;] dumb, speechless: Act.8:32 (LXX); of idols (MM, see word), 1Co.12:2; of beasts, 2Pe.2:19; τοσαῦτα γένη φωνῶν καὶ οὐδὲν ἄ.—so many kinds of voices and none voiceless, i.e. without signification, unintelligible: 1Co.14:10.† (AS)
Full Thayer's lexicon entry
ἄφωνος — áphōnos
ἄφωνος, ἁφῶν (φωνή), voiceless, dumb; without the faculty of speech; used of idols, 1Co 12:2 (cf. Psa 115:5; Hab 2:18); of beasts, 2Pe 2:16. 1Co 14:10 τοσαῦτα γένη φωνῶν καί οὐδέν αὐτῶν (L T Tr WH omit αὐτῶν) ἄφωνον, i. e. there is no language destitute of the power of language (R. V. text no kind (of voice) is without signification) (cf. the phrases βίος ἀβίωτος a life unworthy of the name of life, χάρις ἄχαρις). used of one that is patiently silent or dumb: ἀμνός, Act 8:32 from Isa 53:7. (In Greek writings from (Theog.), Pindar, Aeschylus down.)
4 occurrences
Acts (1), I Corinthians (2), II Peter (1)