perfidious
per-fid-i-ous
adjective
Deliberately deceitful and untrustworthy, especially in betraying a trust.
"His perfidious betrayal of his friends was unforgivable."
Thesaurus
Synonyms: unfaithful, treacherous, punic
per-fid-i-ous
Deliberately deceitful and untrustworthy, especially in betraying a trust.
"His perfidious betrayal of his friends was unforgivable."
Synonyms: unfaithful, treacherous, punic