Fool

ASS

Think of a stubborn farm animal often used as an insult for someone acting foolishly.

Fool" is a classic crossword clue that often hints at the answer "ASS" because it plays on the informal, slightly crude meaning of the word—someone who’s acting stupid or making a fool of themselves. The word "ass" has been slang for a foolish or obnoxious person since at least the 19th century, making it a reliable fit for puzzles aiming for a cheeky or casual tone. Crossword setters love this kind of double meaning, where a simple word can carry both a literal and a slangy punch.