Synonyms|552Antonyms|100|Broader|5Narrower|0Related|576

150 entries under foolish topic. ×

1
fruity(silly, unwise)
1
futile(adjective, dull, simple, slow)
1
half-baked(dull, weak, simple, stupid)
1
half-witted(dull, weak, simple, silly)
1
harebrained(weak, simple, silly, stupid)
1
ill-conceived(silly, fantastic, unwise, impractical)
1
ill-considered(weak, simple, silly, thoughtless)
1
impracticable(silly, fantastic, unwise, impractical)
1
inappropriate(wrong, false, stupid, awkward)
1
incautious(weak, simple, silly, thoughtless)
1
indiscreet(dull, weak, simple, silly)
1
injudicious(weak, simple, silly, thoughtless)
1
jerky(light, weak, simple, silly)
1
loopy
1
moonstruck(silly, unwise)
1
nerdy(weak, simple, silly, thoughtless)
1
of unsound mind(expression, idiom, silly, fantastic)
1
out of all reason(expression, idiom, silly, fantastic)
1
out to lunch(expression, idiom, dull, silly)
1
quixotic(silly, fantastic, unwise, impractical)
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ChicagoSmart Define. 2015. "ludicrous thesaurus" https://smartdefine.org/ludicrous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, ludicrous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/ludicrous/thesaurus/synonyms>.
MLASmart Define. "ludicrous thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/ludicrous/thesaurus/synonyms>