pawn off

Dispose of by deception, as in They tried to pawn off a rebuilt computer as new. This expression may have originated as a corruption of palm off, although it was also put as pawn upon in the 1700s, when it originated.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.