119 entries under silly topic. ×

8
fruity(adjective, foolish, mad, insane)
8
round the bend(expression, adjective, idiom, foolish)
8
screwy(adjective, crazy, mad, dubious)
7
erratic(adjective, strange, crazy, mad)
7
irrational(adjective, weak, simple, unusual, wild)
7
screwball(adjective, slang, foolish, crazy)
7
unusual(adjective, strange, foolish, crazy)
7
zany(adjective, weak, simple, foolish)
6
demented(adjective, wrong, unusual, wild, strange)
6
dippy(adjective, weak, simple, foolish)
6
flaky(adjective, crazy, mad, irregular)
5
absurd(adjective, weak, simple, wrong, wild)
5
crazed(adjective, foolish, crazy, mad)
5
cuckoo(adjective, foolish, crazy, mad)
5
daffy(adjective, weak, simple, foolish)
5
potty(adjective, wild, foolish, crazy)
5
unbalanced(adjective, strange, foolish, crazy)
4
berserk(adjective, foolish, crazy, mad)
4
fatuous(weak, simple, foolish, thoughtless)
4
maniacal(adjective, foolish, crazy, mad)
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APASmart Define. (2016). kooky thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/kooky/thesaurus/synonyms
ChicagoSmart Define. 2016. "kooky thesaurus" https://smartdefine.org/kooky/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, kooky thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/kooky/thesaurus/synonyms>.
MLASmart Define. "kooky thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/kooky/thesaurus/synonyms>