dense dim dull dumb obtuse slow
dense%5:00:00:stupid:00 dim%5:00:00:stupid:00 dull%5:00:00:stupid:00 dumb%5:00:00:stupid:00 obtuse%5:00:00:stupid:00 slow%5:00:00:stupid:00
bedast
slow to learn or understand; lacking intellectual acuity
so dense he never understands anything I say to him never met anyone quite so dim although dull at classical learning, at mathematics he was uncommonly quick (Thackeray) dumb officials make some really dumb decisions he was either normally stupid or being deliberately obtuse worked with the slow students