Lack of difficulty (4)
'lack of difficulty' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ease that I've seen before include "State of relaxation or rest" , "No trouble" , "Absence of hardship" , "Absence of effort" , "Freedom from discomfort or anxiety" .)
'lack of difficulty' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for easiness that I've seen before include "Lack of difficulty" , "Facile quality" , "Nonchalance" .)