Put off, delay (8)
I believe the answer is:
postpone
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">put off</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">delay</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(postponing is a kind of delaying)</span><br/ ><br/ ></span>
(Other definitions for postpone that I've seen before include "pigeon-hole" , "Put off till later" , "Put off until future date" , "'Hold over, defer (8)'" , "'Put off, delay (8)'" .)