Bring about; timely (6)
I believe the answer is:
prompt
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">bring about</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">timely</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for prompt that I've seen before include "Precisely on time" , "Punctual; instigate" , "Bang on" , "Encourage" , "Supply a forgotten line to an actor" .)