Fire-raising (5)
I believe the answer is:
arson
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fire-raising</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for arson that I've seen before include "matchplay, say?" , "Pyromaniac crime" , "Crime of fire-setting (5)" , "Crime of fire setting" , "Malicious fire-lighting" .)