one another

pronoun

: each other

Each Other vs. One Another: Usage Guide

Some handbooks and textbooks recommend that each other be restricted to reference to two and one another to reference to three or more. The distinction, while neat, is not observed in actual usage. Each other and one another are used interchangeably by good writers and have been since at least the 16th century.

Word History

First Known Use

1526, in the meaning defined above

Kids Definition

one another

pronoun

: each other