1. Dispose of something unwanted or inferior by deceptively presenting it as genuine or desirable
   "The art dealer tried to foist off fake paintings as originals"; "The art dealer tried to foist off fake paintings as originals";
   - palm off, fob off [informal], pass off
    
2. Pass on an unwanted task or responsibility to someone else
   "She foisted off the difficult customer onto her colleague";
   - fob off [informal], palm off [informal], dump [informal]

Derived forms: foists off, foisting off, foisted off

Type of: flog [Brit, informal], sell