All 3 Uses

exile
in
Childhood's End
(Auto-generated)

Mankind had grown to trust them, and to accept without question the superhuman altruism that had kept Karellen and his companions so long exiled from their homes.†
Chpt 6 *

exiled = forced to leave one's homeland
What still weirder creatures, he wondered, from what unknown worlds would one day be looking at this exile from Earth?†
Chpt 11
When he had gone into space, he had accepted the possibility of eternal exile from the human race, and loneliness had not yet come upon him.†
Chpt 23

Definitions:

(1) (exile)
to force someone to live outside of their homeland; or living in such a condition

or more rarely: voluntary absence from a place someone would rather be
(2) (meaning too rare to warrant focus)