Eachother or Each Other: Which One Is Correct?

English learners, students, and even professional writers often search for “each other or eachother” because both forms appear online, in messages, and on social media.

At first glance, they look almost identical, which creates real confusion. People want to know which spelling is correct, which one sounds natural, and which one should be used in formal

writing. This confusion matters because using the wrong form can make writing look careless or unprofessional, especially in exams, emails, articles, or business communication. This article solves that problem clearly.

You will get a quick answer, history, British vs American usage, common mistakes, real life examples, trend insights, FAQs, and expert advice all written in simple, clear English.

Eachother or Each Other: Quick Answer

Each other is the only correct spelling in standard English.

Eachother (written as one word) is incorrect and should not be used in formal or professional writing.

Correct examples:

They help each other every day.
The two teams respect each other.

Incorrect example:

❌ They help eachother every day.

In short, always use each other as two separate words.

The Origin of Eachother or Each Other

To understand why only each other is correct, we need to look at its origin.

Historical Background

The phrase each other comes from Middle English. It is made from two separate words:

each (meaning every one of two or more people or things)
other (meaning the second or remaining person or thing)

Together, they form a reciprocal phrase, meaning an action is shared between two or more people.

Why “Eachother” Exists

The spelling eachother appeared much later, mainly because:

People say the phrase quickly in speech
In casual writing, words are often joined
Digital communication encourages shortcuts

However, English dictionaries and grammar guides have never accepted “eachother” as a correct form. It remains a spelling error, not an alternative version.

British English vs American English Spelling

Unlike many spelling debates, each other does not change between British and American English.

British English

Correct form: each other
Incorrect form: eachother

Example:

They support each other during difficult times.

American English

Correct form: each other
Incorrect form: eachother

Example:

The players trust each other completely.
each other or eachother.

Comparison Table

Feature	British English	American English
Correct spelling	each other	each other
Incorrect spelling	eachother	eachother
Meaning	Reciprocal action	Reciprocal action
Accepted in formal writing	Yes	Yes

There is no regional difference here. Both follow the same rule.

Which Spelling Should You Use?

The answer is simple: always use “each other.”

For Students and Exams

Use each other to avoid losing marks
“Eachother” is considered a spelling mistake

For Professional and Business Writing

Emails, reports, and proposals must use each other
Using “eachother” looks unprofessional

Blogs and Online Content

Search engines and grammar tools prefer each other
Correct spelling improves credibility

For Casual Writing

Even in text messages or social media, each other is still the correct form, though people often make mistakes.

Common Mistakes with Eachother or Each Other

Mistake 1: Writing It as One Word

❌ They understand eachother well. ✅ They understand each other well.

Mistake 2: Assuming “Eachother” Is Informal but Acceptable

❌ Using eachother in emails or assignments ✅ Always use each other, even informally

Mistake 3: Ignoring Grammar Checkers

Most grammar tools flag eachother as an error. Do not ignore the suggestion.

Mistake 4: Confusing It with Compound Words

Some English words combine over time, but each other has not.

Each Other in Everyday Examples

Emails

Please support each other during the project.
Team members should respect each other.

News Writing

The two countries depend on each other for trade.
The leaders criticized each other openly.

Social Media

We lift each other up 💙
Friends should always help each other 🤝

Formal and Academic Writing

The variables influence each other significantly.
The partners are accountable to each other.

Eachother or Each Other: Google Trends & Usage Data

Search data shows that “eachother or each other” is a very common grammar query.

Why People Search This Keyword

Spellcheck confusion
Seen both forms online
Unsure which is correct for exams or work

Usage by Region

United States: Searches for correct form are very high
United Kingdom: Same pattern
India, Pakistan, Philippines: Very high learner interest

Usage by Context

Academic writing: Only each other is accepted
Professional writing: Only each other is correct
Social media: Both appear, but one is wrong

Google results strongly favor each other, confirming it as the standard form.

Comparison Table: Eachother vs Each Other

Form	Correct?	Usage	Example
each other	✅ Yes	All contexts	They trust each other
eachother	❌ No	None (error)	❌ They trust eachother

FAQs About Eachother or Each Other

Is “eachother” ever correct?

No. Eachother is always incorrect in standard English.

Why do people write “eachother”?

Because it sounds like one word in speech and appears in informal writing.

Do dictionaries accept “eachother”?

No. Major dictionaries list only each other.

Is “each other” one word or two?

It is two separate words.

Can I use “each other” in formal writing?

Yes. It is completely correct and formal.

Is there any difference in meaning?

No. The meaning stays the same because only one form is correct.

Will grammar tools mark “eachother” wrong?

Yes. Most tools flag it as a spelling error.

Conclusion

The confusion between eachother or each other is very common, but the rule is simple and clear. Each other is the only correct spelling in modern English. It has been used for centuries as a two word phrase that shows a shared or reciprocal action.

The one word form eachother is not accepted in British English, American English, or any standard variety of English.

This means there is no regional choice to make and no style debate to worry about. Whether you are writing an exam answer, a professional email, an academic paper, a blog post, or a social media caption, each other is always the safe and correct option. Using the correct form improves clarity, credibility, and confidence in your writing.

If you remember just one thing, remember this: when people do something together, they do it with each other, never eachother. Mastering this small detail helps your English look polished and professional every time.