Ergo (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ergo</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for therefore that I've seen before include "Ergo" , "Consequently - for that reason" , "It follows" , "Thus" , "as result" .)
(Other definitions for as such that I've seen before include "in a particular capacity" , "in the manner described" , "Intrinsically" , "in that particular role" .)