As a whole, altogether (7)
I believe the answer is:
totally
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">as a whole</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">altogether</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that altogether can be written as totally)</span><br/ ><br/ ></span>
(Other definitions for totally that I've seen before include "without reservation" , "Absolutely" , "Altogether" , "Utterly" , "Wholly" .)