Procedure that's unexceptional (7)
I believe the answer is:
routine
This clue might be a double definition.
'procedure' is the first definition.
(routine is a kind of procedure)
'unexceptional' is the second definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I don't see?
'that's' is the link.
Can you help me to learn more?
(Other definitions for routine that I've seen before include "Typical -- in utero (anag)" , "Regularly performed" , "every day" , "Regular, humdrum" , "Practice as usual" .)