traitor
noun
[ ˈtreɪtə ]
• a person who betrays someone or something, such as a friend, cause, or principle.
• "he was a traitor to his own class"
Similar:
betrayer,
back-stabber,
double-crosser,
double-dealer,
renegade,
Judas,
quisling,
fifth columnist,
viper,
turncoat,
defector,
apostate,
deserter,
collaborator,
fraternizer,
colluder,
informer,
double agent,
snake in the grass,
two-timer,
rat,
scab,
traditor,
tergiversator,
renegado,
Origin:
Middle English: from Old French traitour, from Latin traditor, from tradere ‘hand over’.
