v.
1. tr. (often foll. by on, upon) require (a tax, duty, charge, or obligation) to be paid or undertaken (by a person etc.).
2 tr. enforce compliance with.
3 intr. & refl. (foll. by on, upon, or absol.) demand the attention or commitment of (a person); take advantage of (I do not want to impose on you any longer; I did not want to impose).
4 tr. (often foll. by on, upon) palm (a thing) off on (a person).
5 tr. Printing lay (pages of type) in the proper order ready for printing.
6 intr. (foll. by on, upon) exert influence by an impressive character or appearance.
7 intr. (often foll. by on, upon) practise deception.
8 tr. archaic (foll. by upon) place (a thing).
Etymology: ME f. F imposer f. L imponere imposit- inflict, deceive (as IN-(2), ponere put)