a. Making contrary declarations on the same subject; deceitful. Syn. -- deceitful, double-faced, hypocritical, Janus-faced, two-faced. [ 1913 Webster ]
Likewise must the deacons be grave, not double-tongued. 1 Tim. iii. 8. [ 1913 Webster ]
(adj) marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another; - Israel Zangwill; ; - W.M.Thackeray, Syn. double-tongued, two-faced, Janus-faced, duplicitous, double-faced, deceitful, double-dealing, Example:she was a deceitful scheming little thing; a double-dealing double agent; a double-faced infernal traitor and schemer