Charitable person accommodates pariah (5)
I believe the answer is:
leper
'pariah' is the definition.
(leper is a kind of pariah)
'charitable person accommodates' is the wordplay.
'accommodates' indicates the answer is hidden within the clue.
'LEPER' is hidden within 'charitable person'.
(Other definitions for leper that I've seen before include "despised person" , "This person unwanted by society" , "He's avoided" , "Person shunned socially" , "sick person" .)