Verb
conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end
Source: WordNetbecause life slips away, and because I need for the rest of my journey a star that will not play false to me, a compass that will not lie. Alan Paton
I am not unaware that leaders betray, and sell out, and play false. Mary Harris Jones
He bamboozled his professors into thinking that he knew the subject well Source: Internet