135 entries under silly topic. ×

3
unreasonable(adjective, foolish, stupid, crazy)
2
bats in the belfry(expression, idiom, foolish, mad)
2
bedlamite(adjective, keen, warm, foolish)
2
bizarre(adjective, wrong, wild, foolish)
2
cockeyed(foolish, unwise, impractical, half-baked)
2
erratic(foolish, mad, unstable, insane)
2
flipped(foolish, mad, insane, unwise)
2
flipped out(expression, foolish, crazy, mad)
2
freaked out(expression, foolish, mad, insane)
2
incongruous(adjective, stupid, insignificant, unreasonable)
2
mad as a March hare(expression, idiom, foolish, mad)
2
mad as a hatter(expression, adjective, idiom, foolish)
2
mentally strange(expression, foolish, mad, insane)
2
mindless(adjective, stupid, insignificant, unreasonable)
2
nutty as fruitcake(expression, idiom, foolish, mad)
2
outlandish(adjective, foolish, unwise)
2
outrageous(adjective, foolish, unwise, impractical)
2
raving(adjective, foolish, stupid)
2
schizo(adjective, foolish, mad, insane)
2
schizophrenic(adjective, foolish, stupid)
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APASmart Define. (2015). batty thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/batty/thesaurus/synonyms
ChicagoSmart Define. 2015. "batty thesaurus" https://smartdefine.org/batty/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, batty thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/batty/thesaurus/synonyms>.
MLASmart Define. "batty thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/batty/thesaurus/synonyms>