58 entries under idiom topic. ×

11
free spirit(noun, expression, radical, rebel)
4
eccentric person(noun, expression)
4
off the wall(expression, adjective, beat, unusual)
3
non compos mentis(noun, expression, adjective, crazy)
3
of unsound mind(expression, adjective, silly, foolish)
2
mentally ill(expression, off, dotty)
2
round the bend(expression, silly, foolish, unwise)
1
beyond all reason(expression, silly, foolish, fantastic)
1
fast and loose
1
fly ball(expression, unusual, strange, unexpected)
1
mad as a hatter(expression, silly, foolish, unwise)
1
not all there(expression, adjective, crazy, unstable)
1
not tightly wrapped(expression, strange, crazy, absurd)
1
nutty as fruitcake(expression, silly, foolish, unwise)
1
out in left field(expression, adjective, beat, unusual)
1
out of all reason(expression, silly, foolish, fantastic)
1
out of keeping(expression, unconformity)
1
out of order(expression, unreliable, uneven, variable)
1
out of the ordinary(expression, unusual, strange, new)
1
out of tune(expression, unconformity)
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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>