100 entries under silly topic. ×

32
unpredictable(adjective, change, continue, unusual, passionate)
18
eccentric(adjective, character, unusual, wild, strange)
17
odd(adjective, unusual, careless, wild, strange)
14
crazy(adjective, beat, character, unusual, wild)
7
giddy(adjective, weak, careless, uncertain)
7
irresponsible(adjective, wild, foolish, unstable)
7
wacky(adjective, unusual, wild, strange)
6
kooky(adjective, slang, unusual, strange)
6
nutty(adjective, unusual, wild, strange)
5
demented(adjective, unusual, wild, strange)
5
flaky(adjective, informal, careless, mad)
5
irrational(adjective, weak, unusual, wild, strange)
5
screwy(adjective, wild, foolish, crazy)
4
foolish(adjective, wrong, wild, strange)
4
nuts(adjective, wild, foolish, crazy)
4
screwball(adjective, slang, foolish, mad)
3
deranged(adjective, wild, foolish, crazy)
3
hare-brained(adjective, ignore, crazy, forget)
3
insane(adjective, wild, strange, foolish)
3
mad(adjective, unusual, wild, strange, lively)
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APASmart Define. (2016). erratic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/erratic/thesaurus/synonyms
ChicagoSmart Define. 2016. "erratic thesaurus" https://smartdefine.org/erratic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, erratic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/erratic/thesaurus/synonyms>.
MLASmart Define. "erratic thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/erratic/thesaurus/synonyms>