150 entries under foolish topic. ×

5
strange(adjective, wild, silly, crazy)
4
batty(adjective, light, wild, silly)
4
cuckoo(adjective, silly, unwise)
4
dotty(adjective, weak, simple, silly)
4
dumb(adjective, dull, stupid, half-baked)
4
goofy(adjective, light, stupid, crazy)
4
meaningless(adjective, dull, simple, slow, silly)
4
mindless(adjective, dull, simple, silly)
4
peculiar(adjective, unusual, wild, strange)
3
balmy(adjective, silly, stupid, fantastic)
3
barmy(adjective, silly, unwise)
3
brainless(adjective, dull, weak, simple, silly)
3
daffy(adjective, weak, simple, strange)
3
invalid(adjective, fantastic, absurd)
3
irresponsible(adjective, silly, stupid, fantastic)
3
nuts(adjective, silly, unwise)
3
puerile(adjective, dull, silly, stupid)
3
unintelligent(adjective, dull, weak, simple, silly)
3
unwise(adjective, weak, simple, wild, silly)
3
witless(adjective, dull, weak, simple, silly)
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APASmart Define. (2015). ludicrous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ludicrous/thesaurus/synonyms
ChicagoSmart Define. 2015. "ludicrous thesaurus" https://smartdefine.org/ludicrous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, ludicrous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ludicrous/thesaurus/synonyms>.
MLASmart Define. "ludicrous thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/ludicrous/thesaurus/synonyms>