USER TESTING alternative phrase

We are thinking to eliminate the word “testing” from our vocabulary to make it more user-friendly and human-oriented. We could start using the term “Design validation”. On the other hand, Jakob Nielsen has said: "The phrase “validate the design” discourages teams from finding and following up on UX issues in user testing" https://www.nngroup.com/articles/no-validate-in-ux/

What are your thoughts?