When should I use each other and when should I use one another?


This is an interesting usage note extracted from the "each other" page of Yahoo! Education (emphasis added). It answers your question.

It is often maintained that each other should be used to denote a reciprocal relation between two entities, with one another reserved for more than two: thus The twins dislike each other but The triplets dislike one another.

Sixty-four percent of Usage Panelists say that they follow this rule in their own writing. But it should be pointed out that many reputable writers from Samuel Johnson onward have ignored the rule and that the use of each other for more than two, or of one another for two, cannot be considered incorrect.

In particular, there are contexts in which each other and one another are subtly different in meaning. When speaking of an ordered series of events or stages, one another is the preferred form. Thus the sentence The waiters followed one another into the room was preferred by 73 percent of the Usage Panel to the sentence The waiters followed each other into the room.



Each other refers to two, one another to more than two. "Jones and Smith quarreled; they struck each other" is correct. "Jones, Smith and Brown quarreled; they struck one another" is also correct. Don't say, "The two boys teach one another" nor "The three girls love each other."

  1. Use “each other” when referring to two things.
  2. Study the use of “each other” in these instances: "The two dogs looked at each other. The boy and the girl help each other."
  3. Use “one another” when referring to three or more things.
  4. Note the use of “one another” in this instance: The dog, cat and bird looked at one another.
  5. Remember one small exception to the rule, as pointed out by the Associated Press Stylebook. When referring to an indefinite number, either “each other” or “one another” can be used. For example: We love each other. We love one another

Source: How to Use "Each Other" and "One Another" Correctly

  • I have to admit it bothers me how logically inconsistent this is. The word "each" on its own is in reference to a multitude (for example "he spoke to each of them"), whereas obviously the words "one" and "an" are singular in nature. Why, then, should this meaning logically flip around when adding the word "other" onto the end?
    – devios1
    Jun 13 '19 at 18:37

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.

Source: Merriam-Webster Dictionary

  • 6
    Not necessarily; it's valid to say, for example, "you should all be nice to each other", even if you're talking to more than two people. Nov 30 '10 at 12:29
  • 1
    Is that only true because niceness is assumed to apply in mutual groups of two? Does it work with other adjectives/verbs?
    – WAF
    Nov 30 '10 at 13:13
  • @WAF: no; niceness can apply to any number. In fact, in the two examples given, "each other" and "one another" are interchangeable. As Bruno's answer suggests, there don't appear to be any clear rules about when you should one rather than the other. Nov 30 '10 at 17:54
  • You're right. I've edited my answer accordingly. Jan 17 '12 at 11:43
  • @SteveMelnikoff While this may be true coloquially, just because such phrases are used in practice doesn't make them "correct". I would argue that "one another" is indeed more correct in your example.
    – devios1
    May 2 '14 at 20:50

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