Impose  v. (-sing) 1 (often foll. By on, upon) lay (a tax, duty, charge, or obligation) on. 2 enforce compliance with. 3 also refl. (foll. By on, upon, or absol.) Take advantage of (will not impose on you any longer). 4 (often foll. By on, upon) inflict (a thing) on. [latin impono]