1. involving or guilty of betraying one’s country, cause, or trust

Examples

• The general was accused of traitorous conduct for selling military secrets.
• His traitorous actions shocked his former allies.
• The spy’s traitorous behavior led to his imprisonment.
• She felt that abandoning her principles would be traitorous.
• The traitorous plot was discovered before it could succeed.
• Many considered his defection to be a traitorous act.