Restlessness (10)
I believe the answer is:
impatience
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">restlessness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that restlessness can be written as impatience)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for impatience that I've seen before include "Unreasonable haste" , "which poor waiter reveals" , "Restlessness" , "agitation" , "embodying intolerance" .)