blockheadism

From blockhead +‎ -ism.

blockheadism (countable and uncountable, plural blockheadisms)

1. The character or behaviour of a blockhead; stupidity or idiocy.
   • 1837, Thomas Carlyle, chapter VII, in The French Revolution: A History […], volume III (The Guillotine), London: James Fraser, […], →OCLC, book IV (Terror), page 272:

     Robespierre, when he heard of it, broke out into something almost like swearing at the brutish blockheadism of this Hébert[.]

• “blockheadism”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.