Marked by turmoil (6)
I believe the answer is:
stormy
'marked by turmoil' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stormy that I've seen before include "Passionate" , "Rough" , "Turbulent and tempestuous" , "Full of violent feeling" , "Full of violent outbursts" .)