from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Deliberate breach of faith; calculated violation of trust; treachery: "the fink, whose perfidy was equaled only by his gall” ( Gilbert Millstein).
- n. The act or an instance of treachery.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A state or act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.
- n. Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag to gain proximity to an enemy for purposes of attack.
- n. A state or act of deceit.
from the GNU version of the Collaborative International Dictionary of English
- n. The act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.
from The Century Dictionary and Cyclopedia
- n. Breach of faith or trust; hase treachery; faithlessness.
- n. Synonyms See perfidious.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an act of deliberate betrayal
- n. betrayal of a trust
Latin perfidia, from perfidus, treacherous : per-, to destruction; see per- + fidēs, faith.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin perfidus ("faithless, treacherous, false"), from fides ("faith"); related to, for example, English fidelity. (Wiktionary)