Hesitant, tidy her assembly (7)
I believe the answer is:
dithery
'hesitant' is the definition.
(I've seen this before)
'tidy her assembly' is the wordplay.
'assembly' indicates an anagram.
'tidy'+'her'='tidyher'
'tidyher' anagrammed gives 'DITHERY'.
(Other definitions for dithery that I've seen before include "shaking" , "Hesitant" , "Unsure" , "Quavery" , "Uncertain" .)