Just unconcerned (13)

I believe the answer is:

disinterested

This clue is a double definition.

'just' is the first definition.
(thesaurus)

'unconcerned' is the second definition.
(thesaurus)

(Other definitions for disinterested that I've seen before include "Not expecting any profit" , "With no axe to grind" , "Unbiased" , "Objective - uninvolved" , "Impartial" .)

I've seen this clue in The Telegraph.

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