thickheadedness
StupidityStupidity
Meaning
1 senses(uncountable)Stupidity
Origin
From thickheaded + -ness.From thickheaded + -ness.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable