Numberless (6)
I believe the answer is:
myriad
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">numberless</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for myriad that I've seen before include "Numberless" , "Many" , "Umpteen" , "Immense number found by dim ray" , "Countless, extremely large number" .)