Synonym of additional
Second.
See other (determiner) below.
Alien.
Different.
Not the one or ones previously referred to.
To regard, label, or treat as an "other", as not part of the same group; to view as different and alien.
To treat as different or separate; segregate; ostracise.
An other, another (person, etc), more often rendered as another.
The other one; the second of two.