149 entries under silly topic. ×

3
side-splitting(adjective, light, crazy, funny)
3
unintelligent(adjective, dull, weak, simple)
3
unwise(adjective, weak, simple, wild)
3
witless(adjective, dull, weak, simple)
2
bonkers(adjective, foolish, unwise)
2
cockamamy(foolish, thoughtless, unwise, unintelligent)
2
dull(foolish, stupid, unintelligent, unaware)
2
flaky(adjective, light, wild, foolish)
2
gelastic(adjective, light, crazy, ridiculous)
2
imprudent(adjective, weak, simple, wrong, false)
2
inconsistent(adjective, simple, stupid, crazy)
2
ironic(adjective, light, pleasant, smart)
2
joshing(light, pleasant, crazy, funny)
2
lunatic(adjective, weak, simple, foolish)
2
pointless(adjective, dull, simple, slow)
2
screwball(adjective, foolish, unwise)
2
simple(adjective, dull, weak, foolish)
2
thoughtless(adjective, unwise)
1
foolhardy(adjective, foolish, stupid, fantastic)
1
purposeless(adjective, stupid, insignificant, ridiculous)
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APASmart Define. (2015). ludicrous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/ludicrous/thesaurus/synonyms
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>