Abstaining from alcohol (8)
I believe the answer is:
teetotal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">abstaining from alcohol</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for teetotal that I've seen before include "Abjuring alcohol" , "Abstaining completely from alcohol" , "Never drinking alcohol" , "not taking a drop" , "Sworn off alcohol" .)