1. (noun) an act of deliberate betrayal

• perfidy
• treachery
• treason

1. (noun) an act of deliberate betrayal

• dishonesty
• knavery

2. (noun) the quality of aiding an enemy

• subversiveness
• traitorousness
• treason

1. (noun) an act of deliberate betrayal

• double cross
• double-crossing
• sellout

1. (noun) an act of deliberate betrayal

• betray
• sell
• perfidious
• perfidious
• punic
• punic
• treacherous
• treacherous
• traitor
• treasonist