double-tongued
doub·le·ton·gued
adjective
1.
marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
- “she was a deceitful scheming little thing” Israel Zangwill
- “a double-dealing double agent”
- “a double-faced infernal traitor and schemer” W.M.Thackeray
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.