(obsolete) Otherwise.

(transitive) To regard, label, or treat as an "other", as not part of the same group; to view as different and alien. / (transitive) To treat as different or separate; segregate; ostracise.

One's romantic partner, regardless of marital status or gender. / A person with whom one has an important bond of some kind.

All except for some previously mentioned set. / Every second/two; each alternate; the second of each pair in turn.

(reciprocal pronoun) To one another; one to the other; signifies that a verb applies to two or more entities both as subjects and as direct objects:

(manner) Differently, in another way. / (conjunctive) In different circumstances; or else. / (conjunctive) In all other respects.

Other than supposed; different.

plural of other

Other people. / Those remaining after one or more people or items have left, or done something else, or been excluded.

Third-person singular simple present indicative form of other