60 entries under foolish topic. ×

6
brainless(adjective, stupid, unreasonable, thoughtless)
6
mindless(adjective, wrong, silly, stupid)
6
sophistic(adjective, correct, sense, true)
5
insane(adjective, false, unstable, unreasonable)
4
wacky(adjective, wrong, silly, sense)
4
wrong(adjective, false, unreasonable, irrational)
3
nutty(adjective, wrong, silly, sense)
3
sappy(adjective, sentimental)
3
unwise(adjective, wrong, wild, silly)
2
aberrant(unreasonable, fantastic)
2
daft(adjective, silly, stupid, crazy)
2
pointless(adjective, simple, silly, stupid)
2
reasonless(mad, unreasonable, irrational, worthless)
1
baseless(adjective, poor, false, unreasonable)
1
batty(adjective, silly, stupid, crazy)
1
demented(false, unstable, unreasonable, ill)
1
fantastic(adjective, strange, crazy, irregular)
1
flaky(adjective, wrong, silly, stupid)
1
foolhardy(adjective, stupid, fantastic, absurd)
1
freaky(strange, silly, stupid, unreasonable)
11 years ago|20k views|share |citing 
APASmart Define. (2015). illogical thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/illogical/thesaurus/synonyms
ChicagoSmart Define. 2015. "illogical thesaurus" https://smartdefine.org/illogical/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, illogical thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/illogical/thesaurus/synonyms>.
MLASmart Define. "illogical thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/illogical/thesaurus/synonyms>