65 entries under opposition topic. ×

1
calumniator(noun, agent, rebel, criminal)
1
contrarian(noun, person, opponent, competitor)
1
counteragent(noun, match, opponent, enemy)
1
criminal(noun, agent, rebel, opponent)
1
dark horse(noun, expression, favorite, enemy)
1
defamer(noun, agent, rebel, criminal)
1
defiler(noun, agent, rebel, criminal)
1
detractor(noun, agent, rebel, criminal)
1
falsifier(noun, agent, rebel, criminal)
1
fifth column(noun, expression, agent, rebel)
1
guerrilla(noun, agent, rebel, criminal)
1
informer(noun, agent, rebel, criminal)
1
inquisitor(noun, agent, rebel, criminal)
1
murderer(noun, agent, rebel, criminal)
1
prosecutor(noun, agent, rebel, criminal)
1
rebel(noun, agent, criminal, opponent)
1
revolutionary(noun, agent, rebel, criminal)
1
saboteur(noun, agent, rebel, criminal)
1
seditionist(noun, agent, rebel, criminal)
1
slanderer(noun, agent, rebel, criminal)
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APASmart Define. (2016). rival thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/rival/thesaurus/synonyms
ChicagoSmart Define. 2016. "rival thesaurus" https://smartdefine.org/rival/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, rival thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/rival/thesaurus/synonyms>.
MLASmart Define. "rival thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/rival/thesaurus/synonyms>