Order cheap clothes child rejected (6)
I believe the answer is:
diktat
'order' is the definition.
(I've seen this before)
'cheap clothes child rejected' is the wordplay.
'cheap clothes' becomes 'tat' (I've seen this before).
'child' becomes 'kid' (synonyms).
'rejected' is a reversal indicator.
'tat'+'kid'='tatkid'
'tatkid' reversed gives 'DIKTAT'.
(Other definitions for diktat that I've seen before include "arbitrary order" , "Decree imposed from above" , "Undemocratic decree" , "Declaration allowing no opposition" , "imposed order" .)