#1 duplicitous s. [ambidextrous, deceitful, double-dealing, Janus-faced, two-faced, double-faced, double-tongued] 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. wn
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