Definition:
σιωπάω, -ῶ (σιωπή, silence) [in LXX for חָשָׁה, חָרַשׁ hi, etc;] to be silent or still, keep silence: Mat.20:31 26:63, Mrk.3:4 9:34 10:48 14:61, Luk.19:4, Act.18:9; of one dumb, Luk.1:20 (cf. 4Ma.10:18); addressed rhetorically to the sea, σιώπα, Mrk.4:39. SYN.: ἡσυχάζω, σιγάω (which see) (AS)
Definition:
properly, muteness, i.e. involuntary stillness, or inability to speak; and thus differing from
g4602 (σιγή), which is rather a voluntary refusal or indisposition to speak, although the terms are often used synonymously); to be dumb (but not deaf also, like 2974 properly); figuratively, to be calm (as quiet water); dumb, (hold) peace; from (silence, i.e. a hush;