tongue-tied Synonyms

playing one's cards close to one's chest mumchance uncommunicative dumbstruck clamlike lost for words at a loss for words dumbfounded wordless voiceless unsociable tongueless untalkative obmutescent media-shy having difficulty speaking poorly spoken not talkative unable to get a word out bereft of speech unable to express oneself struck dumb close-lipped dumbstricken unspeaking taciturn speechless ineloquent incoherent inarticulate guarded embarrassed dumb distant diffident close astounded antisocial laconic mum silent shattered secretive secret retiring reticent reserved remote quiet private