As adjectives the difference between outcast and positionless
is that outcast
is that has been cast out; banished, ostracized while positionless
is without a position (social rank); being an outcast.
As a verb outcast
is to cast out; to banish.
As a noun outcast
is one that has been excluded from a society or system, a pariah.
As a noun position
As an adjective positionless is
without a position (social rank); being an outcast.