(a.) Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). treacherous. Retrieved September 26, 2026, from http://smartdefine.org/treacherous/definitions/2074278 |
| Chicago | Webster's. 2011. "treacherous" http://smartdefine.org/treacherous/definitions/2074278 (accessed September 26, 2026). |
| Harvard | Webster's 2011, treacherous, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/treacherous/definitions/2074278>. |
| MLA | Webster's. "treacherous" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/treacherous/definitions/2074278> |