Slow to act; tardy (8)
I believe the answer is:
dilatory
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">slow to act</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">tardy</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for dilatory that I've seen before include "Inclined to dawdle" , "Slothful in idolatry" , "Causing delay" , "Delaying" , "Given to procrastination" .)