Alongside Or. Along Side: Which One Is Correct in English?

The words “alongside” or “along side” look almost identical, but their usage is different. If you have ever wondered whether you should write alongside as one word or along side as two words, you are not alone. The correct choice depends on the meaning and grammatical role of the phrase in your sentence.

In modern English, “alongside” is the standard form in most situations. It can work as a preposition or adverb and usually means beside, next to, or together with someone or something. For example, you might say, “She worked alongside her brother” or “A path runs alongside the river.”

“Along side” is much less common and is generally used only when along and side function as separate words in a specific context. Understanding this small difference can help you avoid spelling and grammar mistakes and choose the form that sounds natural and correct in your writing.

Quick Answer

Alongside is the standard and widely accepted spelling in modern English. It means “next to,” “together with,” or “in addition to.” Along side is usually considered a nonstandard spacing of the same word when used with this meaning. In most writing situations, especially academic and professional writing, use alongside as one word.

Quick Comparison Table

Pronunciation Section

How Is “Alongside” Pronounced?

Alongside has the same pronunciation whether people mistakenly write it as “along side” or correctly write it as one word.

IPA pronunciation:

• American English: /əˌlɔːŋˈsaɪd/
• British English: /əˌlɒŋˈsaɪd/

Syllable breakdown:

• a-long-side
• Three syllables: uh-long-side

There is no pronunciation difference between alongside and the incorrectly separated form along side when both are intended to express the same meaning.

Meaning and Usage

Meaning of Alongside

Alongside is a preposition and adverb meaning:

• Beside something or someone
• Next to something
• Together with another person or thing
• Working in cooperation with someone
• Compared with something else

It is commonly used in everyday English, business writing, literature, and journalism.

Examples of Alongside as “Next To”

• The boat sailed alongside the shore.
• She parked her car alongside the building.
• A small café sits alongside the river.

In these examples, alongside describes physical position.

Examples of Alongside as “Together With”

• He worked alongside experienced engineers.
• The company developed the product alongside its research team.
• She studied alongside her classmates.

Here, alongside means “together with.”

Examples of Alongside as “In Comparison With”

• This model performs well alongside more expensive options.
• The results look impressive alongside previous studies.

In this sense, alongside introduces a comparison.

Meaning of Along Side

The phrase along side is usually not considered the correct spelling when you mean “beside” or “together with.”

However, there are rare situations where the words can appear separately:

• Along functions as one word.
• Side functions as a separate noun.

Example:

• The hikers walked along side roads.

Here, “side roads” is a noun phrase. The sentence means the hikers walked along roads that were located on the side, not “next to.”

Another example:

• They walked along side streets.

This means streets that are smaller or secondary roads, not walking beside streets.

In these cases, along or side are separate words because they perform separate grammatical jobs.

Main Difference Between Along Side Or Alongside

Grammar Rule Section

The main grammar rule is simple:

Use alongside when you mean:

• next to
• beside
• together with
• in cooperation with

Examples:

• The nurse worked alongside the doctor.
• The house stands alongside the road.
• Technology works alongside human creativity.

Do not separate the word when it acts as a single preposition.

When “Along” Or “Side” Are Separate

Use two words only when:

• “side” is a noun.
• “along” modifies the movement or location.

Examples:

• They walked along side streets.
• The car moved along side roads.

Here, “side” describes the type of street or road.

Origin and Etymology

The word alongside developed from the combination of “along” or “side.”

The word along comes from Old English roots related to “on long” or movement in a direction. The word side comes from Old English “sīde,” meaning edge or boundary.

Over time, English combined many word pairs into single compound forms. Examples include:

• inside
• outside
• alongside
• worldwide
• meantime

As English spelling evolved, alongside became established as the standard form.

Dictionary Comparison

Oxford English Dictionary

Oxford recognizes alongside as a standard English word meaning beside or together with.

Cambridge Dictionary

Cambridge lists alongside as a preposition and adverb used for describing position or cooperation.

Merriam-Webster

Merriam-Webster defines alongside as “by the side of” or “together with.”

Collins Dictionary

Collins recognizes alongside as the correct spelling and gives examples involving cooperation and location.

Overall, major dictionaries treat alongside as the established form.

Are Both Words Correct?

The answer depends on meaning.

Alongside Is Correct When:

You mean:

• beside
• next to
• together with

Examples:

• She worked alongside her father.
• The library is alongside the park.

Along Side Can Be Correct When:

The phrase contains two independent words.

Example:

• They built houses along side streets.

Here, “side streets” is a noun phrase.

However, using along side to mean “together with” or “beside” is generally considered incorrect in modern edited English.

British vs American English

The difference between alongside or along side is not a British versus American English issue.

Both varieties use alongside as the standard form.

Which Form Is More Common?

Alongside is overwhelmingly more common in:

• Books
• Newspapers
• Websites
• Academic papers
• Professional documents

Modern editors and grammar checkers usually recommend alongside.

The two-word version appears mainly because speakers hear the phrase as two separate sounds. This is common with compound words in English.

When Should You Use Each Word?

Academic Writing

Use:

• The study was conducted alongside previous research.
• Students worked alongside researchers.

Avoid:

• The study was conducted along side previous research.

Professional Writing

Use:

• Our company works alongside industry leaders.
• Employees collaborate alongside international teams.

The one-word form looks more polished and professional.

Casual Writing

In texts or informal messages, people may write “along side,” but alongside remains the correct choice.

Journalism

News organizations and professional publications use alongside because it follows standard dictionary usage.

Common Mistakes

Mistake 1

Incorrect:

• She worked along side her manager.

Correct:

• She worked alongside her manager.

Explanation:

The meaning is “together with,” so the compound word should be used.

Mistake 2

Incorrect:

• The hospital is located along side the highway.

Correct:

• The hospital is located alongside the highway.

Explanation:

The sentence describes location, so use the single word.

Mistake 3

Incorrect:

• He studied along side his friends.

Correct:

• He studied alongside his friends.

Explanation:

The phrase means “together with,” not “along a side.”

Real-Life Examples

Workplace

• The designer worked alongside the marketing team.
• New employees trained alongside experienced workers.

Travel

• The hotel is located alongside the beach.
• The cyclists rode alongside the river.

Education

• Students learned alongside their classmates.
• Researchers worked alongside university professors.

Technology

• Artificial intelligence works alongside human decision-making.
• Modern tools operate alongside traditional methods.

Daily Conversation

• I sat alongside my best friend during the event.
• She stood alongside her family.

Synonyms

Synonyms for Alongside

Depending on context:

Meaning: next to

• beside
• near
• by
• adjacent to
• next to

Meaning: together with

• with
• together with
• in cooperation with
• along with
• in partnership with

Synonyms for Along Side

When used literally as two words:

• beside a side
• near a side
• along an edge

However, this phrase rarely replaces alongside.

Antonyms

Antonyms for Alongside

Depending on meaning:

• away from
• apart from
• separate from
• distant from
• opposite

Antonyms for Along Side

Possible opposites:

• away from the side
• toward the center
• far from the edge

Memory Trick

Remember:

Alongside = together + side by side.

If you can replace the word with “beside” or “together with,” use alongside.

Example:

• She worked beside him.
• She worked alongside him.

Both sentences have the same meaning.

Similar Confusing Words

Other compound words that confuse writers include:

Why Do People Search “Along Side or Alongside”?

People search this phrase because English spelling often changes when two words combine into one.

Common searches include:

• Is along side one word?
• Is alongside correct?
• Along side or alongside grammar rule
• How do you spell alongside?
• Alongside meaning and examples
• Is along side wrong?

The search intent is usually to confirm spelling before writing an email, article, essay, or professional document.

FAQs

Which word is correct, along side or alongside?

Alongside is the standard spelling when you mean beside or together with.

Is along side ever correct?

Yes, but only when “along” and “side” have separate meanings, such as “along side streets.”

Is alongside one word?

Yes. Modern English dictionaries recognize alongside as one word.

Is alongside used in British English?

Yes. British English commonly uses alongside.

Is alongside used in American English?

Yes. American English also uses alongside.

How do you pronounce alongside?

It is pronounced as three syllables: a-long-side.

Can I use alongside in formal writing?

Yes. Alongside is appropriate for academic, professional, and formal writing.

Is along side a spelling mistake?

Usually yes, when it is used to mean “beside” or “together with.”

What is another word for alongside?

Depending on meaning, alternatives include beside, with, next to, and together with.

Which form do grammar checkers prefer?

Most grammar tools recommend alongside as the standard form.

Expert Recommendation

Editors, teachers, dictionaries, and professional style guides recommend using alongside in almost all situations.

When writing for:

• Schools
• Businesses
• Websites
• Publications
• Professional communication

choose alongside because it is the recognized modern spelling.

Only use along side when the words genuinely function separately in a sentence.

Final Verdict

The correct choice in most situations is alongside.

The word works as a preposition or adverb meaning “beside,” “next to,” or “together with.” The separated form along side is not a standard alternative spelling and should usually be avoided.

Key Takeaways

• Alongside is the preferred modern spelling.
• It means beside, next to, or together with.
• Along side is only acceptable when “along” and “side” are separate words.
• The difference is not related to British or American English.
• Professional writing should use alongside.

John Mercer

I’ve spent over a decade exploring the nuances of English grammar and helping writers express themselves clearly. Writing has always been my passion, and I love breaking down complex rules into simple, practical tips you can use every day. I authored Grammar Made Simple and Mastering English Usage, books that guide learners from confusion to confidence. When I’m not writing, you’ll find me mentoring students or diving into classic literature to uncover the beauty of language.