281 entries under foolish topic. ×

22
frivolous(adjective, characteristic, slight, ability, detail)
21
daft(adjective, characteristic, weak, simple, wild)
21
pointless(adjective, characteristic, stupid, insignificant)
20
dippy(adjective, characteristic, knowledge, slang, ability)
20
imbecilic(adjective, weak, simple, knowledge, ability)
20
unreasonable(adjective, characteristic, weak, simple, wrong)
20
meaningless(adjective, characteristic, slight, stupid)
19
empty-headed(adjective, characteristic, slight, ability)
19
flighty(adjective, characteristic, ability, stupid)
19
moronic(adjective, weak, simple, knowledge, ability)
18
childish(adjective, characteristic, innocent, trivial)
18
unwise(adjective, characteristic, weak, simple, wrong)
17
irresponsible(adjective, characteristic, stupid, fantastic)
17
mindless(adjective, characteristic, dull, wrong, ability)
17
simple(noun, adjective, characteristic, weak, slight)
17
vacuous(adjective, characteristic, informal, careless, indifferent)
16
imprudent(adjective, characteristic, weak, simple, careless)
16
harebrained(adjective, characteristic, weak, simple, knowledge)
16
illogical(adjective, characteristic, wrong, stupid)
16
nutty(adjective, light, weak, simple, wrong)
10 years ago|39k views|share |citing 
APASmart Define. (2016). silly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/silly/thesaurus/synonyms
ChicagoSmart Define. 2016. "silly thesaurus" https://smartdefine.org/silly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, silly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/silly/thesaurus/synonyms>.
MLASmart Define. "silly thesaurus" 20 January 2016. Web. 22 September 2026. <https://smartdefine.org/silly/thesaurus/synonyms>