4
unintelligently(adverb, ignorantly, unintelligently)
3
carelessly(adverb, hastily, speedily, headlong, impulsively)
3
dully(adverb, stupidly)
3
fatuously
3
ignorantly(adverb, ignorantly)
3
moronically(adverb, unintelligently)
3
thoughtlessly(adverb, hastily, speedily, headlong, carelessly)
3
unreasonably(adjective, adverb, intensely, fiercely, violently)
2
asininely
2
bizarrely(adverb, absurdly, ridiculously)
2
comically(adverb, ridiculously)
2
daftly
2
eccentrically(adverb, absurdly, ridiculously)
2
fiercely(intensely, hastily, wildly, impulsively, rashly)
2
frantically(intensely, fiercely, hastily, wildly, impulsively)
2
furiously(intensely, fiercely, hastily, wildly, impulsively)
2
grotesquely(adverb, ridiculously)
2
heedlessly(adverb, hastily, speedily, headlong, carelessly)
2
hurriedly(intensely, fiercely, hastily, wildly, impulsively)
2
imprudently(adverb, hastily, impulsively, rashly)
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APASmart Define. (2015). foolishly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/foolishly/thesaurus/synonyms
ChicagoSmart Define. 2015. "foolishly thesaurus" https://smartdefine.org/foolishly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, foolishly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/foolishly/thesaurus/synonyms>.
MLASmart Define. "foolishly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/foolishly/thesaurus/synonyms>