Relaxing ending, short of century (6)
I believe the answer is:
easing
'relaxing' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for easing that I've seen before include "relaxing" , "Allaying, alleviating" , "Becoming less severe" , "falling off?" , "Moderation - relief" .)