speechless (adjective) speechless: without ability to talk
Sinonime: aghast, amazed, aphonic, astounded, buttoned up, clammed up, close-mouthed, cool as cucumber,
cool*,
dazed,
dumb,
dumbfounded, dumbstruck, inarticulate, mum,
mute, not saying boo,
reserved,
shocked,
silent,
taciturn, thunderstruck, tight-lipped, tongue-tied, uncommunicative, unflappable, voiceless, wordless
Antonime: articulate, communicative,
responsive