Curt, abrupt (5)
I believe the answer is:
terse
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">curt</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">abrupt</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for terse that I've seen before include "Trees (anag.)" , "Crisp and brief" , "Briefly expressed" , "Aphoristic" , "Pithy among trees" .)