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.

Loyal father of a treacherous son. Shak.

The treacherous smile, a mask for secret hate. Cowper.

Syn. -- Faithless; perfidious; traitorous; false; insidious; plotting.

-- Treach"er*ous*ly, adv. -- Treach"er*ous*ness, n.

 

© Webster 1913.

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