There isn't a specific word for someone who believes in evolution. The term "evolutionary biologist" is used for someone who studies the scientific theory of evolution, but it doesn't necessarily mean they believe in it.

Here are some common ways to describe someone who accepts the scientific theory of evolution:

* Someone who accepts the scientific evidence for evolution

* Someone who understands the theory of evolution

* Someone who believes in the scientific consensus on evolution

It's important to note that the scientific theory of evolution is supported by a vast amount of evidence and is accepted by the vast majority of scientists.