(n.) The act of violating faith or allegiance; violation of a promise or vow or of trust reposed; faithlessness; treachery.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). perfidy. Retrieved September 20, 2026, from http://smartdefine.org/perfidy/definitions/2043717 |
| Chicago | Webster's. 2011. "perfidy" http://smartdefine.org/perfidy/definitions/2043717 (accessed September 20, 2026). |
| Harvard | Webster's 2011, perfidy, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/perfidy/definitions/2043717>. |
| MLA | Webster's. "perfidy" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/perfidy/definitions/2043717> |