143 entries under noun topic. ×

18
traitor(person, opposition, trust, agent)
16
rat(person, informal, behavior, trust)
12
informer(opposition, source, agent, villain)
11
double-crosser(person, trust, source, spy)
10
squealer(source, spy, grass, sneak)
9
turncoat(source, spy, sneak, informer)
9
two-timer(spy, turncoat, conspirator)
8
double-dealer
8
snitch(source, spy, grass, sneak)
6
Judas(person, trust, spy, decoy)
6
blabber
6
nark(source, grass, sneak, decoy)
6
renegade(person, rebel, spy, criminal)
6
spy(opposition, source, agent, villain)
5
Benedict Arnold(expression, spy, informer, rat)
5
canary(source, grass, sneak, informer)
5
conspirator(spy, turncoat, knave, plotter)
5
deceiver(source, talent, sneak, informer)
5
deserter(rebel, spy, fugitive, turncoat)
5
fink(source, spy, grass, sneak)
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APASmart Define. (2015). betrayer thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/betrayer/thesaurus/synonyms
ChicagoSmart Define. 2015. "betrayer thesaurus" https://smartdefine.org/betrayer/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, betrayer thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/betrayer/thesaurus/synonyms>.
MLASmart Define. "betrayer thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/betrayer/thesaurus/synonyms>