2
troublesome(problematic, argumentative, quarrelsome)
2
tuneless(adjective, discordant)
2
ugly(adjective, difficult, rude, unpleasant, unfriendly)
2
unharmonious(adjective, discordant)
2
unmelodious(adjective, discordant)
2
unmusical(adjective, discordant)
2
violent(adjective, difficult, hostile, irritable, turbulent)
2
virulent(adjective, mean, nasty, unfriendly, hateful)
1
aberrant
1
aggravating
1
aggravative
1
ajar
1
alien(adjective, mean, nasty, unfriendly, hateful)
1
annoyed(adjective, cross, emotional, angry, vulnerable)
1
annoying
1
anti(adjective, mean, nasty, unfriendly, hateful)
1
ardent(nasty, determined, hostile, spirited, aggressive)
1
argumental
1
argumentive
1
at issue
11 years ago|17k views|share |citing 
APASmart Define. (2015). contentious thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/contentious/thesaurus/synonyms
ChicagoSmart Define. 2015. "contentious thesaurus" https://smartdefine.org/contentious/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, contentious thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/contentious/thesaurus/synonyms>.
MLASmart Define. "contentious thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/contentious/thesaurus/synonyms>