Undue hurry (5)
I believe the answer is:
haste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">undue hurry</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 haste that I've seen before include "Urgent hurry" , "Over-eager speed" , "Rapidity" , "Heats (anag.)" , "More of this can slow you up!" .)