105 entries under silly topic. ×

5
foolish(adjective, wild, strange, crazy)
5
nuts(adjective, wild, strange, foolish)
5
wild(adjective, unusual, strange, foolish)
4
bonkers(adjective, foolish, crazy, mad)
4
cuckoo(noun, adjective, slang, foolish)
4
daft(adjective, keen, wild, strange)
4
lunatic(noun, adjective, wild, foolish)
4
off the wall(expression, adjective, idiom, beat, unusual)
4
preposterous(adjective, wild, strange, foolish)
4
touched(adjective, unusual, wild, strange)
4
unpredictable(adjective, unusual, strange, foolish)
3
crazed(adjective, wild, foolish, crazy)
3
demented(adjective, unusual, wild, strange)
3
dippy(foolish, unwise)
3
fruity(adjective, foolish, insane, unwise)
3
idiotic(adjective, foolish, fantastic, absurd)
3
irrational(adjective, keen, warm, unusual, wild)
3
nonsensical(adjective, foolish, fantastic, ridiculous)
3
of unsound mind(expression, adjective, idiom, foolish)
3
potty(adjective, wild, foolish, crazy)
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APASmart Define. (2016). eccentric thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/eccentric/thesaurus/synonyms
ChicagoSmart Define. 2016. "eccentric thesaurus" https://smartdefine.org/eccentric/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, eccentric thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/eccentric/thesaurus/synonyms>.
MLASmart Define. "eccentric thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/eccentric/thesaurus/synonyms>