4
stupefied
4
vapid(adjective, dull, soft, slight, flat)
3
bizarre(adjective, wild, strange, foolish, stupid)
3
booby
3
carefree(adjective, feature, state, condition, trait)
3
derisory(adjective, foolish, fantastic, absurd, unwise)
3
dope(noun, simple, fool, innocent, jerk)
3
dull(adjective, simple, flat, careless, foolish)
3
eccentric(adjective, wild, strange, foolish, crazy)
3
fantastic(adjective, weak, simple, wild, strange)
3
flaky(adjective, light, wrong, wild, foolish)
3
fruity(foolish, mad, insane, unwise)
3
jerk(noun, simple, fool, innocent, clown)
3
thick(adjective, stupid, unreasonable, green, fat)
3
trifling
3
twit(noun, simple, fool, innocent, jerk)
3
unimportant(adjective, slight, small, foolish, stupid)
3
useless(adjective, stupid, insignificant, senseless, ridiculous)
3
vain(adjective, slight, small, stupid, insignificant)
3
airy
10 years ago|39k views|share |citing 
APASmart Define. (2016). silly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/silly/thesaurus/synonyms
ChicagoSmart Define. 2016. "silly thesaurus" https://smartdefine.org/silly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, silly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/silly/thesaurus/synonyms>.
MLASmart Define. "silly thesaurus" 20 January 2016. Web. 21 September 2026. <https://smartdefine.org/silly/thesaurus/synonyms>