Acting in bad faith, deception by pretending to entertain one set of intentions while acting under the influence of another
English: duplicity, double-dealing
double-dealing, Janus-faced, ambidextrous, deceitful, double-faced
English: duplicity, double-dealing
English: ambidextrous, deceitful, double-dealing, duplicitous, Janus-faced, two-faced, double-faced, double-tongued