doltish

From dolt +‎ -ish.

doltish (comparative more doltish, superlative most doltish)

1. Like a dolt; dull in intellect; stupid.
   • 1851 November 14, Herman Melville, Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, →OCLC:

     Take off thine eye! more intolerable than fiends' glarings is a doltish stare!

• See also Thesaurus:stupid