Crude and rude depiction as thus (15)
I believe the answer is:
unsophisticated
'crude' is the definition.
(I've seen this before)
'rude depiction as thus' is the wordplay.
'rude' indicates an anagram.
'depiction'+'as'+'thus'='depictionasthus'
'depictionasthus' with letters rearranged gives 'UNSOPHISTICATED'.
'and' acts as a link.
(Other definitions for unsophisticated that I've seen before include "straightforward" , "Simple" , "Lacking experience" , "crude" , "green" .)