Disinclination to act (7)
I believe the answer is:
inertia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">disinclination to act</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for inertia that I've seen before include "Tendency not to act" , "I retain (anag) - the tendency to retain same speed and direction" , "Resistance to change" , "Reluctance to change" , "Disinclination to move" .)