9 letters · 24 points in Scrabble
verb conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end
originDerivative of 17th-century vernacular bam (“to trick, to con”), which is a derivative of bam in noun use (fraudster, cheat). Possibly from French embobiner.
Etymology from Wiktionary, CC BY-SA 3.0