Synonyms: dim, dense, dull, dumb, obtuse, slow
Definition: slow to learn or understand; lacking intellectual acuity
Usage: 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
Similar words: stupid
Definition: lacking or marked by lack of intellectual acuity
Synonyms: dense
Definition: having high relative density or specific gravity
Usage: dense as lead
Similar words: heavy
Definition: of comparatively great physical weight or density
Usage: a heavy load; lead is a heavy metal; heavy mahogany furniture
Definition: hard to pass through because of dense growth
Usage: dense vegetation; thick woods
Similar words: impenetrable
Definition: not admitting of penetration or passage into or through
Usage: an impenetrable fortress; impenetrable rain forests
Synonyms: dense, impenetrable, heavy
Definition: permitting little if any light to pass through because of denseness of matter
Usage: dense smoke; heavy fog; impenetrable gloom
Similar words: thick
Definition: relatively dense in consistency
Usage: thick cream; thick soup; thick smoke; thick fog