"So to speak" is a commonly used phrase in English to indicate that the following statement is not to be taken literally. There are many synonyms for this phrase, such as "as it were," "in a manner of speaking," "in a sense," "figuratively speaking," "metaphorically speaking," "in a way," "sort of," "kind of," "more or less," and "to a degree." These alternatives can be used interchangeably with "so to speak" and can help to add variety to your writing or speech. By using synonyms, you can also avoid overusing the same phrase repeatedly and demonstrate more nuanced language skills.