58 entries under idiom topic. ×

5
first and last(expression, unity)
5
off the wall(expression, adjective, beat, unusual)
4
of unsound mind(expression, silly, foolish, unwise)
4
one and only(expression, adjective, separate, special)
3
bereft of reason
3
deprived of reason
3
non compos mentis
3
not all there
3
out of proportion
2
over and above(verb, expression, adjective, phrasal verb)
1
behind the times(expression, out, old, primitive)
1
beyond all reason(expression, silly, foolish, fantastic)
1
breaking new ground(expression, strange, new, fresh)
1
lacking a mate
1
missing a mate
1
not tightly wrapped(expression, strange, crazy, absurd)
1
not with it(expression, out, old, primitive)
1
nutty as fruitcake(expression, silly, foolish, unwise)
1
of olden days(expression, out, old, primitive)
1
of the old school(expression, out, old, primitive)
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APASmart Define. (2016). odd thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/odd/thesaurus/synonyms
ChicagoSmart Define. 2016. "odd thesaurus" https://smartdefine.org/odd/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, odd thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/odd/thesaurus/synonyms>.
MLASmart Define. "odd thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/odd/thesaurus/synonyms>