nonadopter
/noʊnˈædpɔrtər/Definitions
1. noun
A person who is unlikely to adopt a particular practice, policy, or technology.
“The company’s slow adoption of renewable energy sources was attributed to the reluctance of its key nonadopters.”
2. noun
Someone who refuses or fails to take up a new idea or practice, often due to skepticism or lack of understanding.
“The team’s attempts to implement a new project management system were hindered by a few vocal nonadopters on the team.”