141 entries under silly topic. ×

1
ill-conceived(foolish, fantastic, unwise, impractical)
1
ill-considered(adjective, weak, simple, foolish)
1
impracticable(foolish, fantastic, unwise, impractical)
1
inappropriate(foolish, fantastic, unwise, impractical)
1
keen(adjective, foolish, crazy, mad)
1
mentally strange(expression, adjective, foolish, mad)
1
nerdy(weak, simple, foolish, thoughtless)
1
off the wall(expression, adjective, idiom, simple)
1
out of all reason(expression, idiom, foolish, fantastic)
1
quixotic(foolish, fantastic, unwise, impractical)
1
screw loose(expression, foolish, mad, unwise)
1
simple(weak, foolish, thoughtless, unsound)
1
unusual(adjective, foolish, stupid, crazy)
1
unworkable(foolish, fantastic, unwise, impractical)
1
weak(simple, foolish, ill, thoughtless)
1
zealous(adjective, foolish, crazy, mad)
0
aper
0
gung ho(expression, adjective, foolish, crazy)
0
unpredictable(adjective, foolish, crazy, rash)
0
warm(adjective, foolish, crazy, mad)
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APASmart Define. (2015). insane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insane/thesaurus/synonyms
ChicagoSmart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, insane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>.
MLASmart Define. "insane thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms>