When writing papers or emails, it can be tedious to repeatedly use the phrase "be based on." Luckily, there are plenty of synonyms that can be used instead! Some examples include: rely on, derive from, hinge on, stem from, have its roots in, rest on, and center on. These alternative phrases can help make writing more interesting and less repetitive. Additionally, using different synonyms can help put a new spin on an idea or argument, and provide a fresh perspective. It's always good to have a variety of options when it comes to writing, so make use of these synonyms for "be based on" and spice up your vocabulary!