perfidy

[ pur-fi-dee ]
/ ˈpɜr fɪ di /

noun, plural per·fi·dies.

deliberate breach of faith or trust; faithlessness; treachery: perfidy that goes unpunished.
an act or instance of faithlessness or treachery.

Origin of perfidy

1585–95; < Latin perfidia faithlessness, equivalent to perfid(us) faithless, literally, through (i.e., beyond the limits of) faith ( per- per- + fid(ēs) faith + -us adj. suffix) + -ia -y3

synonym study for perfidy

See disloyalty.

Example sentences from the Web for perfidy

British Dictionary definitions for perfidy

perfidy
/ (ˈpɜːfɪdɪ) /

noun plural -dies

a perfidious act

Word Origin for perfidy

C16: from Latin perfidia, from perfidus faithless, from per beyond + fidēs faith