Part of speech:
A spy used in counterespionage
A utility that can facilitate traduction.
A disloyal person who betrays or deserts his cause, religion, political party, friend, etc.
One who, privy to the commission of a crime, confidentially communicates with the police or other governmental entity about it.
One who secretly collects information concerning the enemies of a government or group.
A contemptible person.
A pigeon used as a decoy.
A traitor or betrayer
(Linguistics) A native speaker who acts as a linguistic reference for a language being studied. The informant demonstrates native pronunciation, provides grammaticality judgments regarding linguistic well-formedness, and may also explain cultural references and other important contextual information.
A spy employed by two rival espionage organizations
A person who cooperates with an enemy invader
A person given to hypocrisy.
One who participates in a conspiracy. Also called co-conspirator.
An instance of sneaking; a quiet, stealthy movement.
(Slang) A stool pigeon.
One that supports, as a structural member of a building.
A person who follows another's beliefs or teachings; disciple
The definition of perfidious is someone or something that cannot be trusted or that is dishonest.
Of, having the nature of, or involving treason; traitorous
A person hired to join a labor union, political party, etc. in order to incite its members to actions that will make them or their organization liable to penalty
A harbor or anchorage so formed or protected
A plant having no permanent woody stem; an herb.
Any of various chiefly tropical fishes of the family Eleotridae of fresh, brackish, and shallow marine waters, resembling the gobies but without fused pelvic fins and noted for their habit of lying immobile.
A person regarded as subversive
Reliance on something in the future; hope:
One who double deals. A cheat or crook.
(Archaic) A coward.
The definition of a rebel is a person who stands up to or defies authority.
Find another word for traitor. In this page you can discover 54 synonyms, antonyms, idiomatic expressions, and related words for traitor, like: counterspy, betrayer, traducer, renegade, informer, spy, plotter, fink, stool pigeon, deserter and judas.