- Treacherously
- Treacherous Treach"er*ous, a. [See {Treacher}.]
Like a traitor; involving treachery; violating allegiance or
faith pledged; traitorous to the state or sovereign;
perfidious in private life; betraying a trust; faithless.
[1913 Webster]
Loyal father of a treacherous son. --Shak. [1913 Webster]
The treacherous smile, a mask for secret hate. --Cowper. [1913 Webster]
Syn: Faithless; perfidious; traitorous; false; insidious; plotting. [1913 Webster] -- {Treach"er*ous*ly}, adv. -- {Treach"er*ous*ness}, n. [1913 Webster]
The Collaborative International Dictionary of English. 2000.