55 entries under idiom topic. ×

9
round the bend(expression, adjective, silly, foolish)
8
mentally ill(expression, adjective, insane, sane)
8
of unsound mind(expression, adjective, silly, mad)
7
not all there(noun, expression, adjective, slang)
6
out to lunch(expression, adjective, silly, mad)
4
around the bend(expression, adjective, sane)
4
off one's rocker(adjective, sane)
3
family jewels(noun, expression, slang, nut)
3
off the wall(expression, adjective, simple, unusual)
2
mad as a March hare(expression, silly, foolish, mad)
2
mad as a hatter(expression, adjective, silly, foolish)
2
nutty as fruitcake(expression, silly, foolish, mad)
1
bats in the belfry(expression, silly, foolish, mad)
1
crazy person
1
egg insulator
1
just plain nuts
1
off the hinges
1
off the track
1
rule joint
1
stark raving mad(adjective, sane)
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APASmart Define. (2016). nuts thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/nuts/thesaurus/synonyms
ChicagoSmart Define. 2016. "nuts thesaurus" https://smartdefine.org/nuts/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, nuts thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/nuts/thesaurus/synonyms>.
MLASmart Define. "nuts thesaurus" 3 March 2016. Web. 21 September 2026. <https://smartdefine.org/nuts/thesaurus/synonyms>