200 entries under stupid topic. ×

2
raving(foolish, unreasonable, illogical)
2
remiss(careless, unthinking, obtuse, unperceptive)
2
slow(adjective, foolish, vague, impulsive)
2
thick-headed
2
unprofitable(adjective, insignificant, useless, senseless)
2
unreflective(careless, unthinking, obtuse, unperceptive)
2
without rhyme or reason(expression, adjective, idiom, insignificant)
1
crazed(adjective, wild, foolish, crazy)
1
deranged(adjective, wild, foolish, crazy)
1
absent-minded(careless, vague, unthinking, obtuse)
1
around in circles(expression, adjective, idiom, insignificant)
1
backward(adjective, foolish, vague, impulsive)
1
capricious(foolish, senseless, unreliable, changeable)
1
drained(adjective, dull, flat, tired)
1
exorbitant(adjective, unreasonable, absurd, excessive)
1
extreme(adjective, unreasonable, absurd, excessive)
1
far-fetched(adjective, foolish, senseless, irrational)
1
freaky(light, crazy, unreasonable, senseless)
1
going nowhere(expression, adjective, insignificant, useless)
1
impotent(adjective, insignificant, useless, senseless)
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APASmart Define. (2016). silly thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/silly/thesaurus/synonyms
ChicagoSmart Define. 2016. "silly thesaurus" https://smartdefine.org/silly/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, silly thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/silly/thesaurus/synonyms>.
MLASmart Define. "silly thesaurus" 20 January 2016. Web. 26 September 2026. <https://smartdefine.org/silly/thesaurus/synonyms>