not talkative

hushed imperceptible muffled

unhearable

closemouthed faint low mum mumbled mute muted noiseless nonvocal quiet soundless still unclear uncommunicative voiceless wordless

bashful

mute quiet shy still

buttoned-up clammed up closemouthed hushed muted nonvocal not forthcoming reserved secretive soundless speechless tight-lipped tongue-tied uncommunicative unsociable unspeaking voiceless wordless zipped

agitated

hushed mum mute restrained reticent

bashful buttoned-up checked clammed up close closed-up closemouthed curbed dumb dummied up faint hush iced inarticulate incoherent inconversable indistinct inhibited laconic mousy muted noiseless nonvocal reserved shy silentious soundless still struck dumb taciturn tongue-tied unclear uncommunicative unheard unsociable unspeaking voiceless wordless zipped

clamorous communicative explicit noisy talkative tangible

buttoned-up clammed up closemouthed dumb hushed mum mute muted quiet reserved restrained reticent secretive taciturn tongue-tied zipped