Synonyms and related words :
asleep, beef-witted, benumbed, blear-witted, blockish, blunt, blunt-witted, callous, dead, deadened, dense, dim, dim-witted, doltish, dopey, dull, dull of mind, dull-headed, dull-pated, dull-witted, dumb, fat-witted, gross-headed, heavy, hebetudinous, impassible, imperceptive, impercipient, insensate, insensible, insensitive, insentient, numb, numbed, obdurate, obtuse, slow, slow-witted, sluggish, thick, thick-brained, thick-headed, thick-pated, thick-skinned, thickheaded, thickskulled, unfeeling, unfelt, unperceptive, wooden|