0
disgustingly dirty(expression, idiom)
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disloyal
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dodgy
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double-dealing
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extracurricular
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extramarital
0
fraudulent
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highly offensive(expression, idiom)
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incestuous
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malevolent
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malicious
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marked-up
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mean
0
mischievous
0
offensively malodorous(expression, idiom)
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pollution
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rotten
0
shady
0
smirch
0
smuttier
11 years ago|4.1k views|share |citing 
APASmart Define. (2015). unsportsmanlike thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unsportsmanlike/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsportsmanlike thesaurus" https://smartdefine.org/unsportsmanlike/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unsportsmanlike thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unsportsmanlike/thesaurus/synonyms>.
MLASmart Define. "unsportsmanlike thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/unsportsmanlike/thesaurus/synonyms>