Stressed, clashed with artist for nothing (7)
I believe the answer is:
fraught
'stressed clashed' is the definition.
I can't judge whether this defines the answer.
'with artist for nothing' is the wordplay.
'with' is a charade indicator (letters next to each other).
'artist for' becomes 'fr' (I can't justify this - if you can you should believe this answer much more).
'nothing' becomes 'aught' (synonyms).
'fr' put next to 'aught' is 'FRAUGHT'.
Can you help me to learn more?
(Other definitions for fraught that I've seen before include "Burdened with anxiety" , "anxious" , "Charged (with); tense" , "Causing stress" , "Tension-filled" .)