Slang Terms For Stupidity

noun a state or quality of being silly or foolish

• The daftness of his actions was evident to everyone in the boardroom.
• I can't believe the daftness of her decision to quit her job without a backup plan.
• Stop with the daftness and start taking things seriously.
• The daftness of his dreams knew no bounds as he reached for the stars.

adjective describing someone as foolish or stupid

• The professor was shocked by the student's use of the term 'cock-brained' in their essay.
• I can't believe you said that, you're so cock-brained sometimes.
• She's acting so cock-brained lately, I don't know what's gotten into her.
• His cock-brained idea to quit his job without a backup plan backfired on him.