Humanitarian's trial is cut - that's corrupt (10)
I believe the answer is:
altruistic
'humanitarian's' is the definition.
(thesaurus)
'trial is cut that's corrupt' is the wordplay.
'that's corrupt' indicates anagramming the letters.
'trial'+'is'+'cut'='trialiscut'
'trialiscut' with letters rearranged gives 'ALTRUISTIC'.
(Other definitions for altruistic that I've seen before include "in others' interest" , "Concerned for others' wellbeing" , "Selfless" , "magnanimous" , "Humanitarian" .)