Run in neutral (4)
I believe the answer is:
idle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">run in neutral</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for idle that I've seen before include "out of a job" , "Not occupied" , "Not busy" , "Indolent" , "Fruitless" .)