How to sign: 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;
Similiar / Same: double-dealing, two-faced, double-tongued, ambidextrous, deceitful, Janus-faced, double-faced