State of mental or emotional strain (6)
![Ross](/clue/static/ross-mug.min.png)
'state of mental or emotional strain' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for stress that I've seen before include "Ictus" , "Particular emphasis" , "Underline - tension" , "Draw attention to" , "Force" .)
(Other definitions for tension that I've seen before include "Stretched, uneasy, condition" , "nerves" , "Stress, tautness" , "Strained state" , "Strained condition" .)