Foist off is a phrasal verb that means to force someone to accept or take something unwanted or useless. There are several synonyms for this term that you can use depending on the context. Some of these include palm off, pass off, dump, fob off, and unload. Palm off means to sell or give something deceptively, while pass off means to present something as genuine or valuable. Dump implies getting rid of something quickly and carelessly. Fob off is to deceive someone by offering an inferior substitute. Unload means to sell off unwanted items. Knowing these synonyms can help you communicate more effectively and make your writing more interesting.