dumb Synonyms

speechless silent dull obtuse mute dim dense slow unanswered tongue-tied tongue-tie unheard tongueless unspecialized vacuous vapid ill-advised zoological zooidal zoic wordless wooden witless whist voiceless thick-skulled thick-skinned slow-witted quieter simple-minded simple silly silentious senseless ridiculous soft-headed soundless spooney thick-headed stupid thick taciturn tacit surd stunned stolid retarded unvoiced birdbrained abiotic