Became less severe (5)
I believe the answer is:
eased
(Other definitions for eased that I've seen before include "Facilitated" , "Moved carefully" , "Slackened off" , "Relaxed" , "Abated" .)
I believe the answer is:
eased
(Other definitions for eased that I've seen before include "Facilitated" , "Moved carefully" , "Slackened off" , "Relaxed" , "Abated" .)