perfidy
noun
[ ˈpəːfɪdi ]
• the state of being deceitful and untrustworthy.
• "it was an example of his perfidy"
Similar:
treachery,
duplicity,
deceit,
perfidiousness,
deceitfulness,
disloyalty,
infidelity,
faithlessness,
unfaithfulness,
betrayal,
treason,
falseness,
falsity,
double-dealing,
dishonesty,
two-facedness,
untrustworthiness,
breach of trust,
false-heartedness,
Punic faith,
Origin:
late 16th century: via French from Latin perfidia, from perfidus ‘treacherous’, based on per- ‘to ill effect’ + fides ‘faith’.
