Orthodox and intelligent? Not bishop (5)
I believe the answer is:
right
'orthodox' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for right that I've seen before include "Authority - one hand" , "Equitable" , "Correct - starboard" , "Correct; political wing" , "ideal" .)