Flower without form is considered inferior (8)
I believe the answer is:
declasse
'considered inferior' is the definition.
'declasse' can be an answer for 'inferior' (thesaurus). I am unsure of the 'considered' bit.
'flower without form' is the wordplay.
'flower' becomes 'dee' (River Dee).
'without' means one lot of letters goes inside another ('without' can be similar in meaning to 'outside').
'form' becomes 'class' (synonyms).
'dee' placed around 'class' is 'DECLASSE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for declasse that I've seen before include "stripped of social standing" , "Having fallen in social status" , "having lost status" , "down the social ladder" .)