Being (8)
'being' is the definition.
(a creature is a living being)
This is all the clue.
(Other definitions for creature that I've seen before include "soul" , "Animal or person" , "Living being" , "Human being or lower animal" , "These comforts make life easy" .)
'being' is the definition.
(I know that person is a type of being)
This is all the clue.
(Other definitions for person that I've seen before include "present appearing in this" , "he's the third" , "Type" , "character" , "Bod" .)
'being' is the definition.
(I've seen this in other clues)
This is all the clue.
(Other definitions for entity that I've seen before include "Object" , "Essence, existence" , "Something existing in its own right" , "It exists as a seperate thing (6)" , "Presence" .)
'being' is the definition.
(I know that being can be written as existence)
This is the entire clue.
(Other definitions for existence that I've seen before include "The business of being" , "survival" , "A way of living" , "Way of life" , "State of being" .)