Eagerly, enthusiastically (6)
I believe the answer is:
avidly
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">eagerly</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">enthusiastically</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for avidly that I've seen before include "Keenly, eagerly" , "With keenness" , "with enthusiasm" , "Eagerly, enthusiastically" , "With eagerness" .)