A fellow liking to flout authority would be perfect (8)
I believe the answer is:
flawless
'perfect' is the definition.
(similar in meaning)
'a fellow liking to flout authority' is the wordplay.
I cannot really see how this works, but
'a' is within the answer.
'fellow' could be 'les' (Les is a man's name) and 'les' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'would be' is the link.
Can you help me to learn more?
(Other definitions for flawless that I've seen before include "Without blemish or fault" , "Immaculate" , "Without blemish, perfect" , "unimpaired" , "Without blemish or imperfection" .)