Passive, static (5)
I believe the answer is:
inert
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">passive</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">static</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(both can mean not moving)</span><br/ ><br/ ></span>
(Other definitions for inert that I've seen before include "Chem. non-reactive" , "Unmoving" , "Not chemically active" , "Slow and apathetic" , "Disinclined to act" .)