perfidious
adjective
[ pəˈfɪdɪəs ]
• deceitful and untrustworthy.
• "a perfidious lover"
Similar:
treacherous,
duplicitous,
deceitful,
disloyal,
faithless,
unfaithful,
traitorous,
treasonous,
false,
untrue,
double-dealing,
dishonest,
two-faced,
Janus-faced,
untrustworthy,
false-hearted,
double-faced,
truthless,
Punic,
Origin:
late 16th century: from Latin perfidiosus, from perfidia ‘treachery’.
