The word "foists" means to impose or force something on someone. There are several synonyms for this word, including "impose," "impart," "inflict," "insert," and "imbed." These words can all be used interchangeably with "foists" in sentences such as "He tried to foist his opinions on me" or "She foisted her opinion on the rest of the group." Other synonyms for "foists" include "enforce," "impose upon," "force upon," "ram down," and "impel upon." All of these words convey the idea of someone trying to impose their will or opinions on others, often without their consent or agreement.