9
batty(adjective, characteristic, wild, silly, foolish)
9
complacent(adjective, characteristic, stupidity, foolishness)
8
empty-headed(adjective, characteristic, thoughtless, stupidity, foolishness)
8
goofy(adjective, characteristic, silly, foolish, fantastic)
8
illogical(adjective, characteristic, simple, silly, sense)
8
thoughtless(adjective, characteristic, silly, thoughtless, unwise)
8
unwise(adjective, characteristic, weak, simple, wild)
8
weak-minded(adjective, characteristic, ability, planned, stupidity)
8
dippy(adjective, characteristic, weak, simple, silly)
8
unthinking(adjective, characteristic, thoughtless, stupidity, foolishness)
7
empty(adjective, characteristic, stupidity, foolishness, ineffective)
7
cuckoo(adjective, characteristic, wrong, wild, silly)
7
dotty(adjective, characteristic, weak, simple, silly)
6
nutty(adjective, characteristic, weak, simple, wild)
6
sappy(adjective, characteristic, stupid, stupidity, foolishness)
6
childish(adjective, characteristic, stupidity, foolishness)
6
incompetent(adjective, characteristic, inadequacy, craziness)
6
wild(wrong, foolish, stupid, crazy, fantastic)
5
useless(adjective, ridiculous, absurd, pointless, vain)
4
simple(adjective, characteristic, weak, silly, foolish)
11 years ago|23k views|share |citing 
APASmart Define. (2015). fatuous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fatuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "fatuous thesaurus" https://smartdefine.org/fatuous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, fatuous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fatuous/thesaurus/synonyms>.
MLASmart Define. "fatuous thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/fatuous/thesaurus/synonyms>