Urchin regularly downed fried chips -- 'veg' would be inaccurate (9)
I believe the answer is:
imprecise
'inaccurate' is the definition.
(associated in meaning)
'urchin regularly downed fried chips veg' is the wordplay.
'urchin' becomes 'imp' (both can mean a misbehaving child).
'regularly downed' means one should take alternating letters (letters taken at regular intervals).
'fried'+'chips'+'veg'='friedchipsveg'
The alternate letters of 'friedchipsveg' are 'recise'.
'imp'+'recise'='IMPRECISE'
'would be' is the link.
(Other definitions for imprecise that I've seen before include "Inexact" , "Not exact or clearly stated" , "Approximate" , "Not true" , "Vague" .)