Hesitant French article rues reform (6)
I believe the answer is:
unsure
'hesitant' is the definition.
(I've seen this before)
'french article rues reform' is the wordplay.
'french article' becomes 'un' (indefinite article in French).
'reform' indicates anagramming the letters (letters in a new form).
'rues' is an anagram of 'sure'.
'un'+'sure'='UNSURE'
(Other definitions for unsure that I've seen before include "Far from certain" , "Lacking confidence" , "self-confidence" , "Not certain, doubtful" , "Diffident, uncertain" .)