Rough recipes I’m developing (9)
I believe the answer is:
imprecise
'rough' is the definition.
(imprecise can mean rough or approximate)
'recipes i'm developing' is the wordplay.
'developing' indicates an anagram (letters developed into a new form).
'recipes'+'im'='recipesim'
'recipesim' is an anagram of 'IMPRECISE'.
(Other definitions for imprecise that I've seen before include "not quite right" , "Not very nice" , "Not true" , "Rough" , "Lacking exactness" .)