102 entries under expression topic. ×

2
bats in the belfry(idiom, foolish, mad, insane)
2
mad as a March hare(idiom, foolish, mad, insane)
2
mad as a hatter(idiom, foolish, mad, insane)
2
nutty as fruitcake(idiom, foolish, mad, insane)
2
of unsound mind(idiom, foolish, stupid, mad)
2
out to lunch(idiom, foolish, crazy, mad)
2
round the bend(idiom, foolish, mad, insane)
2
without rhyme or reason(adjective, idiom, stupid, insignificant)
1
around in circles(adjective, idiom, stupid, insignificant)
1
being a sucker(foolish, innocent, susceptible, naive)
1
beyond all reason(idiom, foolish, fantastic, half-baked)
1
bird brain
1
dumb ox(simple, fool, innocent, jerk)
1
easily taken in(foolish, innocent, susceptible, naive)
1
easy mark(simple, foolish, innocent, naive)
1
fair game(simple, fool, innocent, jerk)
1
falling hook line and sinker(foolish, innocent, susceptible, naive)
1
familiar tune(adjective, dull, flat, tired)
1
feeble minded
1
flipped out(foolish, crazy, mad, insane)
10 years ago|39k views|share |citing 
APASmart Define. (2016). silly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/silly/thesaurus/synonyms
ChicagoSmart Define. 2016. "silly thesaurus" https://smartdefine.org/silly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, silly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/silly/thesaurus/synonyms>.
MLASmart Define. "silly thesaurus" 20 January 2016. Web. 20 September 2026. <https://smartdefine.org/silly/thesaurus/synonyms>