Assume from is a commonly used phrase that refers to making an inference or supposition about something based on certain factors. However, if you're tired of using the same phrase over and over, there are several synonyms that you can use instead. Some of these synonyms include deduce, gather, conclude, extrapolate, infer, understand, presume, guess, and surmise. Each of these words can be used interchangeably with assume from in the right context. For instance, you can deduce from someone's body language that they're uncomfortable in a certain situation, or gather from a person's tone of voice that they're being sarcastic. The key is to choose a synonym that accurately conveys the meaning you're trying to express.