I dare, moving head in preparation (9)
I believe the answer is:
readiness
'preparation' is the definition.
(I know that preparation can be written as readiness)
'i dare moving head' is the wordplay.
'moving' is an anagram indicator.
'head' becomes 'ness' (ness is a headland).
'i'+'dare'='idare'
'idare' anagrammed gives 'readi'.
'readi'+'ness'='READINESS'
'in' is the link.
(Other definitions for readiness that I've seen before include "Immediate availability" , "initiative" , "Inclination" , "State of preparedness" , "Promptitude" .)