How many letters does the top answer for “another word for craziness” have?

The most common answer is foolery (7 letters).

Crossword clue: another word for craziness

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

foolery 7 letters gen-syn

foolish or senseless behavior

lunacy 6 letters gen-syn

foolish or senseless behavior

tomfoolery 10 letters gen-syn

foolish or senseless behavior

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase