Accentuate (6)
I believe the answer is:
stress
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">accentuate</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that accentuate can be written as stress)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for stress that I've seen before include "what causes tension" , "Emphasis on anxiety?" , "Emphasise the strain" , "suffering" , "Tension, pressure" .)