The definition of Judas is a term used for someone who betrays you while pretending to be your friend.
A spy used in counterespionage
A utility that can facilitate traduction.
Any of numerous long-tailed rodents of various families (esp. Muridae and Cricetidae) resembling, but larger than, the mouse: rats are very destructive pests and carriers of highly contagious diseases, as bubonic plague and typhus
The definition of perfidious is someone or something that cannot be trusted or that is dishonest.
A contemptible person.
A pigeon used as a decoy.
A person who follows another's beliefs or teachings; disciple
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.
(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
(Slang) A stool pigeon.
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
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.
Of, having the nature of, or involving treason; traitorous
One who participates in a conspiracy. Also called co-conspirator.
A person regarded as subversive
A person who cooperates with an enemy invader
An instance of sneaking; a quiet, stealthy movement.
One that supports, as a structural member of a building.
A plant having no permanent woody stem; an herb.
One who double deals. A cheat or crook.
A disloyal person who betrays or deserts his cause, religion, political party, friend, etc.
(Archaic) A coward.
The definition of a rebel is a person who stands up to or defies authority.
Reliance on something in the future; hope:
Find another word for traitor. In this page you can discover 63 synonyms, antonyms, idiomatic expressions, and related words for traitor, like: betrayer, judas, brutus, quisling, benedict-arnold, loyalist, counterspy, double-crosser, hypocrite, traducer and turncoat.