traitorous
Guilty of treachery
Traitorous describes someone who betrays trust, allegiance, or loyalty—especially to one's country: a traitorous act, traitorous generals who switched sides.
The word carries strong moral condemnation, implying deliberate betrayal rather than mere disloyalty.
It can extend to smaller-scale betrayals: Her traitorous friend revealed the secret.
Untrue to commitments
- unfaithfulBetraying a partner's trust
- faithlessUntrustworthy, lacking loyalty
- perfidiousDeliberately breaking faith
- untrustworthyNot deserving of confidence
false · duplicitous · two-faced · backstabbing · double-dealing · seditious · mutinous · recreant
One who betrays allegiance
- defectorOne who abandons allegiance
- quislingTreasonous occupation collaborator
- renegadeDeserter of a cause
- backstabberDisloyal pretend ally
double-crosser · Judas · rat · informant · collaborator · fifth columnist · mole · fink
Deliberate breach of trust
- backstabbingCovert betrayal of trust
- double-crossTreacherous deception of partner
- seditionInciting revolt against government
- defectionAbandoning one's loyalty
sabotage · conspiracy · collusion · mutiny · insurrection · sellout · apostasy · subversion
disloyal
Untrue to commitments
- unfaithfulBetraying a partner's trust
- faithlessUntrustworthy, lacking loyalty
- perfidiousDeliberately breaking faith
untrustworthy · false · duplicitous · two-faced · backstabbing · double-dealing · seditious · mutinous · recreant · false-hearted
turncoat
One who betrays allegiance
- defectorOne who abandons allegiance
- quislingTreasonous occupation collaborator
- renegadeDeserter of a cause
backstabber · double-crosser · Judas · rat · informant · collaborator · fifth columnist · mole · fink · snake
perfidy
Deliberate breach of trust
- backstabbingCovert betrayal of trust
- double-crossTreacherous deception of partner
- seditionInciting revolt against government
defection · sabotage · conspiracy · collusion · mutiny · insurrection · sellout · apostasy · subversion · espionage
- wickedevil, wicked, villainous, malicious, sinister