Nearly all (4)
I believe the answer is:
most
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nearly all</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for most that I've seen before include "Nearly all, majority" , "In the highest degree" , "Greatest in amount or degree" , "Extremely, very" , "Kind of commercial pact where two countries agree to treat each other as well as any other" .)