6
critically(adverb, strictly, harshly, sternly, unfortunately)
6
faultily(adverb, wrongly)
6
harshly(adverb, severely, vigorously, extremely, hardly)
6
unfortunately(adverb, very, thoroughly, poorly, extremely)
6
very(adverb, greatly)
6
wickedly(adverb, evilly, naughtily, troublesomely)
6
wrong(adverb, inexpedience, astray)
5
amiss(adverb, wrongly, defectively)
5
awry(adjective, adverb, amiss)
5
defectively
5
disadvantageously
5
erroneously(adverb, poorly, wrongly, carelessly, improperly)
5
greatly
5
horribly(adverb, arouse bad feelings)
5
inaccurately(adverb, wrongly, carelessly, incorrectly, slackly)
5
miserably(adverb, poorly, arouse bad feelings)
5
naughtily(adverb, troublesomely, willfully)
5
unfavourably
5
unkindly
5
unpleasantly(adverb, arouse bad feelings)
10 years ago|22k views|share |citing 
APASmart Define. (2016). badly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/badly/thesaurus/synonyms
ChicagoSmart Define. 2016. "badly thesaurus" https://smartdefine.org/badly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, badly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/badly/thesaurus/synonyms>.
MLASmart Define. "badly thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/badly/thesaurus/synonyms>