Simplicity (4)
'simplicity' is the definition.
(synonyms)
This is all the clue.
(Other definitions for ease that I've seen before include "Lack of worry or agitation" , "Calm" , "Effortlessness" , "Reduce (pain)" , "Alleviate" .)
'simplicity' is the definition.
(I know that simplicity can be written as easiness)
This is all the clue.
(Other definitions for easiness that I've seen before include "Facile quality" , "Lack of difficulty" , "Nonchalance" .)