466 entries under adjective topic. ×

4
crackpot(impractical, half-baked, doomed)
4
credulous(foolish, stupid, innocent, green)
4
demented(wrong, wild, foolish, stupid)
4
gaga(ability, informal)
4
green(foolish, stupid, innocent, thick)
4
heedless(careless, foolish, crazy, senseless)
4
incongruous(foolish, stupid, insignificant, unreasonable)
4
inconsequential(wrong, slight, small, foolish)
4
injudicious(weak, simple, careless, foolish)
4
jejune(dull, soft, slight, flat)
4
lightheaded
4
loopy(knowledge, ability, informal, foolish)
4
madcap(careless, foolish, crazy, vague)
4
potty(wild, foolish, stupid, crazy)
4
vapid(dull, soft, slight, flat)
3
bizarre(wild, strange, foolish, stupid)
3
carefree(feature, state, condition, trait)
3
derisory(foolish, fantastic, absurd, unwise)
3
dull(simple, flat, careless, foolish)
3
eccentric(wild, strange, foolish, crazy)
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APASmart Define. (2016). silly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/silly/thesaurus/synonyms
ChicagoSmart Define. 2016. "silly thesaurus" https://smartdefine.org/silly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, silly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/silly/thesaurus/synonyms>.
MLASmart Define. "silly thesaurus" 20 January 2016. Web. 23 September 2026. <https://smartdefine.org/silly/thesaurus/synonyms>