Pish, a word commonly used to express disdain or disbelief towards something, has a few synonyms that can be used interchangeably in different contexts. Some of these synonyms include scoff, dismiss, reject, mock, and deride. While scoff and dismiss imply a lack of interest or importance towards something, reject suggests disapproval or disagreement with it. On the other hand, mock and deride both indicate similar disdain and ridicule towards something. Depending on the tone and context, these synonyms can be used to convey a similar meaning as pish and can be useful to vary one's vocabulary and avoid repetition.