Numskull

noun

Definitions

Noun
  1. 1
    A dunce, mentally dull or stupid person. derogatory
  2. 2
    a stupid person; these words are used to express a low opinion of someone's intelligence wordnet
  3. 3
    A person who refuses to learn or grow mentally. derogatory

    "That numskull will never learn how to compose a letter."

Etymology

From numb (“deadened”) + skull.

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