noun A female traitor; a traitress.

What do you call a female traitor?

: a woman who is a traitor.

Is traitorous a real word?

Some common synonyms of traitorous are disloyal, faithless, false, perfidious, and treacherous. While all these words mean "untrue to what should command one's fidelity or allegiance," traitorous implies either actual treason or a serious betrayal of trust.