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"craziness" is also used as a crossword clue. If that's what you saw, the answer is often madness (7 letters).
Definitions
foolish or senseless behavior
Word origin
From crazy + -ness.
Used in a sentence
“the craziness of a ship, or of the limbs”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Absurdity”9 letters
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