Hotshot (3)
I believe the answer is:
ace
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hotshot</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ace that I've seen before include "Entertain" , "Top card or champion" , "Very good; playing card" , "1" , "One-spotted card" .)