Fortunately (7)
I believe the answer is:
luckily
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fortunately</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for luckily that I've seen before include "Fortuitously" , "It is fortunate that" , "enjoying good fortune" , "By chance" .)