doltish Play adjective(of a person) stupid; idiotic. SYNONYMS birdbrainedboneheadedbovinebrain-deadbrainlesschuckleheadedcretinousdaftdensedimdopeydozydulldull-witteddumbdunce-likedunderheadedempty-headedfat-headedfoolishgulliblehalf-wittedidioticignorantimbeciliclamebrainedmindlessmoronicmuttonheadednaivenot the full shillingpea-brainedpig-ignorantsimplesimple-mindedslowslow on the uptakeslow-wittedsoft in the headstupidthickthick as two short planksvacuousvapidwitlesswooden-headed