4
bizarre(adjective, careless, strange, foolish, stupid)
4
bootless
4
childish(adjective, silly, foolish, stupid, absurd)
4
cretinous(adjective, foolish)
4
dippy(adjective, strange, silly, foolish, stupid)
4
doltish(adjective, dull, careless, silly, foolish)
4
hare-brained
4
harebrained(adjective, careless, silly, foolish, stupid)
4
imprudent(adjective, careless, silly, foolish, stupid)
4
innocuous(adjective, dull, weak, silly, stupid)
4
invalid(adjective, absurd)
4
jackass(adjective, foolish)
4
light
4
screwy(adjective, simple, strange, foolish, stupid)
4
trivial(adjective, dull, simple, slight, poor)
4
wishy-washy(adjective, stupid, unimportance)
4
worthless(adjective, slight, value, small, silly)
3
aimless(adjective, value, stupid, insignificant, unimportant)
3
airy
3
anachronistic(adjective, absurd)
11 years ago|14k views|share |citing 
APASmart Define. (2015). inane thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>