Fine and kinda sorta brill, maybe (4)
I believe the answer is:
fish
'sorta brill maybe' is the definition.
I can't judge whether this defines the answer.
'fine and kinda' is the wordplay.
'fine' becomes 'f' (abbreviation in pencil classifications).
'and' is a charade indicator (letters next to each other).
'kinda' becomes 'ish' (I've seen this in another clue).
'f'+'ish'='FISH'
Can you help me to learn more?
(Other definitions for fish that I've seen before include "Aquatic creature(s)" , "Swimmer" , "- - and chips" , "Eg, sturgeon" , "occupant of tank" .)