Dirty chap sounds important (5)
I believe the answer is:
manky
'important' is the definition.
Both the answer and definition are adjectives.
Maybe they are linked in a way I don't understand?
'dirty chap sounds' is the wordplay.
I cannot quite understand how this works, but
'chap' could be 'man' (chap can mean a man) and 'man' is found in the answer.
The remaining letters 'ky' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for manky that I've seen before include "Rotten" , "Dirty and unpleasant" .)