perfidy
perfidy n
Fr. < L. perfid-us < per-, away entirely, to destruction + fid-ēs, faith.
- Treachery; deceit; betrayal; falseness; disloyalty; deception; duplicity; pretense; feigning.
- Violation of trust; breach of promise.
- Doubt; lack of trust; loss of faith.
- Mirage; illusion.