astounding 10 Associations

dumbfounding dumfounding incredible (similar term) unbelievable (similar term)

boob 4 Associations

dumbbell dummy dope booby pinhead simpleton (generic term) simple (generic term)

deaf 4 Associations

deaf-and-dumb (similar term) deaf-mute (similar term) deafened (similar term) hard-of-hearing (similar term) hearing-impaired (similar term) profoundly deaf (similar term) stone-deaf (similar term)

densely 7 Associations

dumbly obtusely