Reluctance (13)
There are a few possibilities for this:
hesitance
'reluctance' is the definition.
(I know that reluctance can be written as indisposition)
This is the entire clue.
(Other definitions for indisposition that I've seen before include "Slight illness" , "State of being unwell or unfit" , "Disinclination" .)
'reluctance' is the definition.
(I've seen this before)
This is the entire clue.
(Another definition for unwillingness that I've seen is " Reluctance".)
(Other definitions for hesitance that I've seen before include "Diffidence" , "Wavering, delay" , "Doubt" , "Slowness to speak" .)