An Encylopedia Britannica Company

perfidious

1 ENTRIES FOUND:
perfidious /pɚˈfɪdijəs/ adjective
perfidious
/pɚˈfɪdijəs/
adjective
Britannica Dictionary definition of PERFIDIOUS
[more perfidious; most perfidious] literary
: not able to be trusted : showing that someone cannot be trusted