Synonyms:
- asleep,
- beef-witted,
- benumbed,
- blear-witted,
- blockish,
- blunt,
- blunt-witted,
- callous,
- dead,
- deadened,
- dense,
- dim,
- dim-witted,
- doltish,
- dopey,
- dull,
- dull of mind,
- dull-headed,
- dull-pated,
- dull-witted,
- dumb,
- fat-witted,
- gross-headed,
- heavy,
- hebetudinous,
- impassible,
- imperceptive,
- impercipient,
- insensate,
- insensible,
- insensitive,
- insentient,
- numb,
- numbed,
- obdurate,
- obtuse,
- slow,
- slow-witted,
- sluggish,
- thick,
- thick-brained,
- thick-headed,
- thick-pated,
- thick-skinned,
- thickheaded,
- thickskulled,
- unfeeling,
- unfelt,
- unperceptive,
- wooden