Alternative form of this, that, and the other

People of the past thought and acted differently.

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:

(sequence, idiomatic) From another point of view.

(idiomatic) recently; lately; a few days ago.

(Philippines) the day before yesterday.

(conjunctive, idiomatic) Stated or interpreted another way; Used to introduce an explanation, simplification, or clarification.

(idiomatic) A spouse.