5
unkindly
4
abruptly(adverb, severely)
4
acutely(adverb, badly, severely, strictly, sternly)
4
antagonistically(adverb, bad behavior, negatively, contentiously)
4
austerely(adverb, severely)
4
contentiously(adverb, bad behavior, negatively, contentiously)
4
quarrelsomely(adverb, bad behavior, negatively, in negative way)
4
acrimoniously(adverb, severely)
4
adversely(adverb, negatively, difficultly)
4
arduously(adverb, badly, severely, vigorously, hardly)
4
brusquely(adverb, severely)
4
brutally
4
caustically(adverb, severely)
4
curtly(adverb, severely)
4
cuttingly(adverb, severely, shrilly)
4
dissonantly(adverb, contentiously)
4
hoarsely(adverb, shrilly, huskily)
4
inharmoniously(adverb, bad behavior, negatively)
4
pitilessly(adverb, unkindly, nastily, persistently, unremittingly)
4
raspingly(adverb, shrilly)
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APASmart Define. (2016). harshly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/harshly/thesaurus/synonyms
ChicagoSmart Define. 2016. "harshly thesaurus" https://smartdefine.org/harshly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, harshly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/harshly/thesaurus/synonyms>.
MLASmart Define. "harshly thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/harshly/thesaurus/synonyms>