Many English learners are unsure whether the correct plural of passerby is passersby, passerbyers, or simply passerby. The confusion comes from the unusual structure of the word. Unlike most English nouns, passerby forms its plural by changing the main noun, not by adding -s to the end.
If you’ve ever wondered whether to write two passersby, two passerbyers, or two passerby, this guide explains the correct form with grammar rules, examples, comparison tables, common mistakes, and memory tricks.
Quick Answer
Passerby is the correct singular noun. Passersby is the correct plural form. Passerbyers is incorrect and is not a word in standard English.
Why People Confuse It
People often confuse these words because:
- Passerby is a compound noun.
- The word ends with by, making it seem like you should simply add -s or -ers.
- English has many irregular plural forms.
- The plural doesn’t follow the usual -s rule.
- The pronunciation can make passerbyers sound plausible.
The correct forms are:
- Singular: passerby
- Plural: passersby
What Does “Passerby” Mean?
Passerby is a singular noun meaning a person who happens to be walking past a place.
Examples of “Passerby”
- A passerby called the police.
- The passerby stopped to help.
- I asked a passerby for directions.
- A friendly passerby smiled at us.
- The passerby witnessed the accident.
- One passerby picked up the lost wallet.
- The passerby noticed the smoke.
- A curious passerby took a photo.
- Every passerby looked at the street performer.
- The injured man was helped by a passerby.
What Does “Passersby” Mean?
Passersby is the correct plural of passerby. It means more than one person passing by.
Examples of “Passersby”
- Several passersby stopped to watch.
- The musician entertained dozens of passersby.
- Police questioned nearby passersby.
- Many passersby admired the artwork.
- The loud noise surprised nearby passersby.
- Volunteers offered water to passersby.
- Curious passersby gathered around.
- The dog greeted friendly passersby.
- Street performers attracted hundreds of passersby.
- The event caught the attention of many passersby.
What Does “Passerbyers” Mean?
Passerbyers is not a standard English word.
It is an incorrect attempt to make passerby plural by adding -ers. Standard English does not recognize this form.
Incorrect Examples
- ❌ Several passerbyers stopped.
- ❌ The passerbyers watched the show.
- ❌ Many passerbyers helped.
- ❌ Two passerbyers called for assistance.
- ❌ Curious passerbyers gathered nearby.
Passersby vs. Passerbyers vs. Passerby Comparison
| Feature | Passerby | Passersby | Passerbyers |
|---|---|---|---|
| Number | Singular | Plural | Incorrect |
| Standard English | Yes | Yes | No |
| Meaning | One person passing by | More than one person passing by | Not a valid word |
| Example | A passerby helped. | Several passersby helped. | ❌ Several passerbyers helped. |
When to Use Each
Use passerby when:
- Referring to one person.
- Talking about a single witness.
- Describing one individual walking past.
Use passersby when:
- Referring to two or more people.
- Talking about a crowd of people passing by.
- Writing standard English.
Never use passerbyers.
Examples (10+)
- A passerby reported the accident.
- The passerby offered assistance.
- I thanked the passerby for the directions.
- One passerby noticed the missing child.
- Every passerby admired the mural.
- Several passersby applauded the performance.
- Curious passersby stopped to look.
- The police interviewed nearby passersby.
- Many passersby donated money.
- The announcement caught the attention of passersby.
- A passerby returned the lost phone.
- Friendly passersby smiled as they walked past.
Common Mistakes
❌ Two passerbyers helped.
✅ Two passersby helped.
❌ Many passerby stopped.
✅ Many passersby stopped.
❌ One passersby called the police.
✅ One passerby called the police.
❌ Several passerbyers watched the parade.
✅ Several passersby watched the parade.
❌ A passersby found my wallet.
✅ A passerby found my wallet.
Memory Trick
Remember:
One = Passerby
More than one = Passersby
The -s is added to passer, not by.
Think of it like:
- Mother-in-law → Mothers-in-law
- Passerby → Passersby
American vs. British English
There is no difference between American and British English.
Both varieties use:
- ✅ Passerby (singular)
- ✅ Passersby (plural)
- ❌ Passerbyers
Similar Words
Other unusual plural nouns include:
- Mother-in-law → Mothers-in-law
- Attorney general → Attorneys general
- Brother-in-law → Brothers-in-law
- Court-martial → Courts-martial
- Commander-in-chief → Commanders-in-chief
- Hanger-on → Hangers-on
- Runner-up → Runners-up
- Editor-in-chief → Editors-in-chief
Final Verdict
The correct singular form is passerby, and the correct plural form is passersby. Passerbyers is not a word in standard English and should never be used. Because passerby is a compound noun, the plural is formed by adding -s to the main noun passer, not to by.
Remember This
Passerby = One person ✅
Passersby = More than one person ✅
Passerbyers = Incorrect ❌
Frequently Asked Questions
Is “passerby” singular or plural?
Passerby is singular.
What is the plural of “passerby”?
The correct plural is passersby.
Is “passerbyers” a real word?
No. It is not recognized in standard English.
Why is it “passersby” instead of “passerbys”?
Because passer is the main noun in the compound, so it takes the plural ending.
Do American and British English use different forms?
No. Both use passerby and passersby.
Can I say “many passerby”?
No. The correct phrase is many passersby.
Conclusion
Although passerby, passersby, and passerbyers look similar, only passerby and passersby are correct in standard English. Use passerby when referring to one person and passersby for two or more people. Avoid passerbyers, as it is not an accepted English word.
Whenever you encounter unusual compound nouns, remember that the plural often applies to the main noun rather than the final word. This simple rule will help you use passersby confidently and correctly.
