intriguer

STRONGEST

conspirator deserter hypocrite impostor informer renegade spy turncoat

STRONG

Judas apostate backslider betrayer deceiver defector double-crosser fink miscreant quisling rebel snake sneak snitch snitcher squealer tattletale traducer treasonist two-timer whistle-blower wolf

WEAK

Benedict Arnold back-stabber stool pigeon

WEAK

loyalist