Of, pertaining to, or used in observation, especially in observation without experimentation.

Derived from or founded on observation: in this sense usually opposed to experimental.

adjective. Of or pertaining to observation; consisting of, or containing, observations.

adjective. Based on or pertaining to scientific observation.

adjective. Pertaining to observation in general.

adjective. relying on observation or experiment

"He still needs some training in observational skills and could benefit from courses in brevity but that comes with the acceptance into the order."

empiric  empirical  

observationalism  observationalist  observationality  

Copernican  Newtonian  astronomical  cognitive  computational