Munch is inferior to Dutch artist (7)
I believe the answer is:
duchamp
'artist' is the definition.
(French artist Marcel Duchamp)
'munch is inferior to dutch' is the wordplay.
'munch' becomes 'champ' (both can mean to bite).
'is inferior to' says to put letters next to each other (in a down clue, some letters go below others).
'dutch' becomes 'du' (I've seen this in other clues).
'champ' put after 'du' is 'DUCHAMP'.
(Other definitions for duchamp that I've seen before include "US artist" , "Marcel --, French artist" , "US painter" , "French-born artist" .)