dense Synonyms

dull heavy slow obtuse thick dim impenetrable close dim-witted slow-witted solid compact crowded tight thickheaded dull-witted dumb opaque packed thick-headed thickly stiffish stolid tighter stupid thick-skinned substantial unpenetrable tangled thickset technical unpassable terebrate turbid tightly thick-skulled spiss profuse porcine populous populated overloaded overgrown osseous obscure numskulled murky prolific quilted ranker