Almost, nearly (4)
I believe the answer is:
nigh
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">almost</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(nigh can mean almost or nearly)</span><br/ ><br/ >'<span class="explanation-format__original">nearly</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that nearly can be written as nigh)</span><br/ ><br/ ></span>
(Other definitions for nigh that I've seen before include "Nearby" , "See 23" , "All but one" , "Almost (arch.)" , "Impending" .)