Definition of Double dealing

• acting in bad faith; deception by pretending to entertain one set of intentions while acting under the influence of another
• 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