'Dunderhead' definitions:

Definition of 'Dunderhead'

From: GCIDE
  • Dunderhead \Dun"der*head`\, n. [Prov. Eng. also dunderpoll, from dunder, same as thunder.] A dunce; a numskull; a blockhead. --Beau. & Fl. [1913 Webster]

Synonyms of 'dunderhead'

From: Moby Thesaurus