The AI-powered English dictionary
countable and uncountable, plural stupidnesses
(uncountable, rare) The quality or state of being stupid.
(countable, rare) The result or product of being stupid. quotations
Don't let the boss hear you talking stupidness about his son, if you want to keep your job.
2012, Gillian Royes, The Man Who Turned Both Cheeks, page 31