Instant, occurring without delay (9)
I believe the answer is:
immediate
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">instant</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">occurring without delay</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for immediate that I've seen before include "Instant" , "Prompt,straightaway" , "Occurring without delay" , "Most urgent; current" , "Involving no delay" .)