Precipitance (5)
I believe the answer is:
haste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">precipitance</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 haste that I've seen before include "Excessive speed or urgency" , "''More . . . . ., less speed'' (5)" , "Possible cause of careless mistakes?" , "Overly eager speed" , "Rushing (but with less speed?)" .)