Serenity (5)
'serenity' is the definition.
(I know that serenity can be written as peace)
This is all the clue.
(Other definitions for peace that I've seen before include "[STILLNESS]" , "Repose, tranquillity" , "State of freedom from war" , "Accord" , "Calm, tranquility" .)
'serenity' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for calmness that I've seen before include "Composure, equanimity" , "Serenity" .)
'serenity' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for restfulness that I've seen before include "Peace" , "Relaxing quality" .)