Busses Vs Buses: Which Spelling Is Actually Correct?

If you type “busses” into a search bar, you probably want to know if it’s correct or a mistake. It happens to a lot of people, especially when writing quickly about school transportation, charter trips, or a Greyhound ride. The short answer: buses is the standard, correct plural of “bus” in American English. Busses is technically listed as a variant in some dictionaries, but it’s rare, easy to confuse with another word, and best avoided in everyday and professional writing.

This mix-up isn’t really about grammar rules being unclear. It’s about two words that look almost identical but come from different roots. One means a vehicle. The other, historically, means a kiss. Knowing the difference will save you from an awkward mistake in a school newsletter, a business email, or a travel blog post.

Busses Vs Buses: The Quick Answer

Buses is the plural of bus, the vehicle that carries passengers. Busses is technically an old, secondary spelling of the same plural, but it overlaps with buss, an older word meaning “kiss.” Because of that overlap, style guides and dictionaries now treat buses as the standard form and busses as outdated or nonstandard.

Here’s the split, at a glance:

Word	Meaning	Standard Use
Buses	More than one bus (vehicle)	Correct, standard plural
Busses	Rare variant plural of bus; also means “kisses”	Avoid in transportation contexts
Bus	Singular vehicle; verb meaning to transport	Correct singular form
Buss	Singular noun/verb meaning “kiss”	Archaic, rarely used today

💡 Tip: If you’re writing about school buses, charter buses, or Greyhound buses, always use buses. If you ever see “busses” in that context, treat it as a misspelling.

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What Does “Buses” Mean?

Buses is a plural noun. It refers to more than one large motor vehicle designed to carry many passengers at once, usually along a fixed route or for a scheduled trip. It comes from bus, itself a shortened form of the Latin word “omnibus,” meaning “for all.”

Example sentences:

• The city added ten new buses to the downtown route.
• School buses arrive at the building by 7:45 each morning.
• We booked two charter buses for the wedding guests.

Buses: also functions as a verb form in some tenses. “The school buses the students who live more than two miles away.” In that sentence, “buses” is the present-tense verb form of “to bus,” meaning to transport by bus.

What Does “Busses” Mean?

Busses: has two separate identities, and this is exactly why it causes confusion.

Meaning 1: A rare, older plural of bus. Some dictionaries, including the Cambridge Dictionary and Collins English Dictionary, still list “busses” as a variant plural of “bus.” Merriam-Webster shows the same pattern, listing “buses” as the primary plural, with “busses” noted as an accepted secondary form. This spelling was more common decades ago.

Meaning 2: The plural of “buss,” meaning kisses. In this sense, “buss” and “busses” function as a different noun and verb entirely, referring to kisses rather than vehicles. As a verb, “to buss” means to kiss.

Because these two meanings collide in the same spelling, most style guides now steer writers away from “busses” altogether when talking about vehicles.

Why Buses Is the Preferred Spelling Today

Language change explains most of this. Historically, “buss” was one of the accepted spelling forms of “bus” back in the 1800s, and many dictionaries listed “busses” as a secondary plural form. But usage shifted over time. “Buses” became the dominant spelling by around the 1930s, and it has stayed dominant ever since.

There’s also a spelling logic at play. In English, doubling a final consonant before adding “-es” usually signals a short vowel sound, similar to how “nag” becomes “nagged.” But the single-S pattern tends to appear when a word derives from Latin or Greek roots, the same pattern seen in words like “crocuses” and “focuses”. Since “bus” comes from the Latin “omnibus,” the single-S plural “buses” actually fits the expected pattern better.

Modern data backs this up too. Usage studies show the standard single-S form is now used far more often than the double-S variant in professional and everyday writing, by a wide margin.

AP Style and Dictionary Guidance

If you’re writing for publication, this is the clearest guidance available. The Associated Press Stylebook separates the two words entirely: “bus, buses” refers to transportation vehicles, with verb forms “bus, bused, busing,” while “buss, busses” refers to kisses, with verb forms “buss, bussed, bussing.”

That distinction is worth remembering as a simple rule:

• Buses → vehicles. Single S in the plural.
• Busses → kisses. Double S, because it matches “kisses.”

✅ Correct: The charter buses left at noon.
❌ Incorrect: The charter busses left at noon.

Common Mistakes With Busses Vs Buses

Mistake 1: Using “busses” for vehicles.
Incorrect: School busses picked up the kids at eight.
Correct: School buses picked up the kids at eight.

Mistake 2: Assuming “busses” is always wrong.
It isn’t always wrong, just rarely appropriate. If you’re genuinely writing about kisses in older or literary English, “busses” can be correct. For anything involving transportation, it should be avoided.

Mistake 3: Mixing verb forms.
Incorrect: The driver busses the route every weekday.
Correct: The driver buses the route every weekday. (Meaning: transports by bus.)

⚠️ If you’re ever unsure, read the sentence aloud and ask whether you mean “vehicles” or “kisses.” That usually settles it instantly.

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Grammar Breakdown: Bus as a Noun and a Verb

As a noun, “bus” is singular, and “buses” is plural.

Form	Example
Singular	The bus was late.
Plural	The buses were late.

As a verb, “bus” means to transport by bus, or informally, to clear dishes from a table (as in “bus a table” at a restaurant). Its forms are:

Tense	Form	Example
Present	bus/buses	The district buses students from three towns.
Past	bused	The school bused students during the strike.
Present participle	busing	Busing programs began in several cities in the 1970s.

Dictionaries list both “bused/busing” and “bussed/bussing” as acceptable verb spellings, though “bused” and “busing” with a single S are generally more common in American usage.

Pronunciation

Both spellings are pronounced the same way: BUSS-iz (rhymes loosely with “fuzzes”). The spelling difference doesn’t change how the word sounds, which is part of why “busses” persists as a common typo. People spell what they hear, and both versions sound identical out loud.

Origin of the Word

“Bus” is a shortened form of “omnibus,” a Latin word meaning “for all” or “for everyone.” Omnibus vehicles were originally meant for public use, not private ownership, which is where the “for all” meaning comes from. Over the 1800s, “omnibus” was informally clipped down to “bus,” and in early print, that shortened form was sometimes spelled “‘bus” or “buss” before “bus” without an apostrophe became standard.

“Buss,” the kissing word, developed along a completely separate path and is much older in that sense, unrelated to Latin “omnibus.” The two words just happen to look alike once you add “-es” for the plural, which is the root of all this confusion.

Busses Vs Buses in Technology

You’ll also see “buses” used outside of transportation. In computing and electronics, a bus refers to a system that transfers data between components, such as a computer’s processor and its memory. The plural here follows the exact same rule: buses, not busses.

Example: “The motherboard has several data buses connecting the processor to expansion slots.”

Some technical documents and older manuals do use “busses” in this context too, which is part of the same historical spelling pattern, but “buses” remains the more consistent and recommended choice in modern technical writing.

Buses Vs Busses: British English and American English

Both American and British English treat “buses” as the standard plural. There’s no meaningful regional split here the way there is with words like “color” and “colour.” British dictionaries, including Collins and Cambridge, do note “busses” as an existing variant, but they still list “buses” first as the primary and more widely used form. In practice, British transit authorities, American school districts, and international travel companies all default to “buses.”

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Synonyms and Related Words

Word	Meaning	Difference From Bus
Coach	A comfortable long-distance bus, often used for tours	More specific to long trips, common in British English
Shuttle	A bus or vehicle running short, repeated trips	Focused on frequency, not vehicle size
Motorcoach	Formal term for a large touring bus	Common in the charter bus industry
Minibus	A smaller bus, usually under 30 passengers	Differs by size, not spelling rules

These words are useful when you’re writing about buses but want variety, though none of them change the spelling rule for “buses” itself.

Frequently Asked Questions

Is it buses or busses?

“Buses” is the correct and standard plural of “bus” when talking about vehicles. “Busses” is a rare variant that mainly means “kisses.”

Is busses a real word?

Yes, but it has two identities. It’s an older, less common plural of “bus,” and it’s also the plural of “buss,” meaning kiss.

Why do some dictionaries list busses as correct?

Because it was historically used as a plural of “bus” before “buses” became dominant in the 1930s. Some dictionaries still include it as a secondary entry for that reason.

What is the AP style rule for buses vs busses?

AP Style reserves “buses” for vehicles and “busses” for kisses, with separate verb forms for each.

How do you spell the plural of school bus?

School buses. This follows the same standard rule as any other type of bus.

Is “bused” or “bussed” correct for the past tense?

Both appear in dictionaries, but “bused” is more common and recommended in American English, especially in transportation contexts, to avoid confusion with “bussed” meaning kissed.

Does British English use busses instead of buses?

No. British English also uses “buses” as the standard plural, though “busses” appears as a minor variant in some British dictionaries.

Is busses used in computer science?

Occasionally, older or informal technical writing uses “busses” for data buses, but “buses” is the more consistent and recommended spelling today.

What’s the difference between bus and buss?

“Bus” refers to the vehicle. “Buss” is an older word meaning to kiss, mostly seen in older literature today.

Final Thoughts

The core difference between busses vs buses comes down to one simple guideline: use buses whenever you’re writing about vehicles, transportation, school routes, charter trips, or data systems in computing. “Busses” isn’t a fabricated error; it has real dictionary history, but it now overlaps with a word meaning “kisses,” which makes it a spelling worth avoiding in almost every modern context.

If you remember just one thing from this, remember the vehicle takes a single S. Buses drive people around. Busses, in the rare cases anyone still uses the word that way, refer to kisses. Keeping that distinction straight will make your writing clearer and help you avoid a mistake that trips up far more people than you’d expect.