Foisting off is a term used to describe the act of imposing something unwanted on others or getting rid of something by tricking others into accepting it. There are a few synonyms that can be used in place of foisting off, such as palming off, dumping off, or passing off. These all convey a sense of getting rid of something unwanted or passing it onto someone else. Other potential synonyms could include offloading, transferring, or unloading. Whatever word you choose to use, it is important to remember that foisting off or any other synonym implies a sense of deception or dishonesty in the act of passing something along to someone else.