Tomorrow vs Tommorow: Which Spelling Is Correct? (2026)

Typing fast and suddenly unsure if it’s “tomorrow” or “tommorow”? You’re far from the only one. This mix up ranks among the most searched spelling questions in English, and the answer is short: tomorrow is correct, tommorow is not. 

Below you’ll find the reasoning, the history behind the word, memory tricks that actually stick, and answers to every related question people type into Google.

Quick Answer: Tomorrow Is Correct

The only accepted spelling is tomorrow, with one M and two R’s: T O M O R R O W. Tommorow, tommorrow, tomarrow, and tomorow are all misspellings and none of them belong in formal or casual writing.

Spelling	Status	Why
Tomorrow	Correct	One M, two R’s
Tommorow	Incorrect	Extra M added
Tommorrow	Incorrect	Extra M plus doubled R error
Tomorow	Incorrect	Missing an R
Tomarrow	Incorrect	Wrong vowel, uses A instead of O
Tommarow	Incorrect	Combines two mistakes at once

Tomorrow Meaning

Tomorrow means the day right after today, or in a broader sense, a future time that hasn’t arrived yet. You’ll see it used both ways in everyday speech.

As an adverb: She’ll call you tomorrow. As a noun: Tomorrow brings a fresh start.

Tomorrow sits opposite yesterday on the calendar. Yesterday points backward to the day before today, while tomorrow points forward to the day after. Together with “today,” these three words form the basic trio English speakers use to talk about time without naming an actual date.

How Many Letters, M’s, and R’s Are in Tomorrow?

This is where the confusion starts, so here’s the breakdown in plain numbers.

• Tomorrow has 8 letters total.
• It contains exactly one M.
• It contains exactly two R’s.
• The full sequence reads T, O, M, O, R, R, O, W.

Say the word slowly and you’ll notice the “morr” sound gets heavy emphasis. That emphasis tricks a lot of writers into doubling the wrong letter.

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Why Is Tommorow Incorrect?

Tommorow adds a second M that doesn’t belong anywhere in the word. There’s no version of standard English, formal or informal, American or British, where that extra M is acceptable. Spell checkers flag it instantly, and so should you.

Is tommorow ever correct? No. Not in texting, not in casual notes, not as a stylistic choice. It’s simply a typo that happened to become common enough to search for.

Why Do People Spell Tomorrow as Tommorow?

Three habits explain almost every case:

1. Phonetic guessing. The strong “morr” sound makes people assume both consonants around it should double, so the M gets doubled by mistake instead of the R.
2. Typing speed. Fast typing on a phone or keyboard often duplicates a letter without the writer noticing.
3. Autocorrect gaps. Older or lightweight text fields sometimes miss the error entirely, letting it slip into a sent message.

None of these reasons make the spelling acceptable, but understanding them makes the mistake easier to catch next time.

“Tommorow” in a Sentence: Incorrect vs. Correct

Incorrect	Correct
I plan on starting my diet tommorow.	I plan on starting my diet tomorrow.
The festival starts tommorow at noon.	The festival starts tomorrow at noon.
Can we reschedule our meeting to tommorow?	Can we reschedule our meeting to tomorrow?
See you tommorow morning.	See you tomorrow morning.

Common Misspellings of Tomorrow

Beyond tommorow, several other variants show up regularly in search data and casual writing.

• Tommorow, two M’s instead of one
• Tommorrow, both letters doubled incorrectly
• Tomorow, missing the second R
• Tomarrow, the O swapped for an A
• Tommarow, two separate mistakes combined

Whichever variant you land on, the fix is the same: go back to tomorrow.

Which Is Correct: Tomorrows or Tomorrow’s?

This depends entirely on what you’re trying to say.

• Tomorrow’s shows possession or is a contraction. Example: Tomorrow’s forecast looks sunny.
• Tomorrows is the plural noun, used when you mean multiple future days in a poetic or reflective sense. Example: We only get so many tomorrows.
• Tomorrows’ with the apostrophe after the S would show possession belonging to multiple tomorrows, which is grammatically unusual and rarely needed in real writing.

Is Tomorrow Double R? Why the R Is Doubled

Yes, tomorrow has a double R, and that comes straight from its origin. The word formed from “to” plus “morrow,” an old English term for morning or the next day. When those two pieces merged, the R at the start of “morrow” combined with nothing extra from “to,” landing exactly one R after the M and one more to close out “morrow,” producing the double R pattern you see today.

An easy way to remember it: think of the word as to + morrow. Morrow already carries its own double R, so you’re not adding anything, you’re just keeping the piece intact.

Why Is Tomorrow Hard to Spell?

Tomorrow trips people up because its pronunciation doesn’t map cleanly onto its spelling. The stressed middle syllable sounds louder than the letters actually justify, so the ear pushes the brain toward doubling the wrong consonant. Add fast typing and casual texting habits, and the error spreads.

The Best Way to Remember Tomorrow

Try breaking the word into its two historical parts:

to + morrow = tomorrow

Say it out loud as two chunks a few times. Since “morrow” is a real word on its own (an old term for the next day), picturing it separately makes the double R feel natural instead of arbitrary, and it keeps you from tacking an extra M onto “to.”

Is “To Morrow” Ever Correct Today?

Old books and nineteenth century texts often wrote the word as two separate words, “to morrow,” or joined with a small connecting mark as “to morrow” styled together. That spacing was standard for its time. Modern English merged the two pieces permanently into one word, so writing it as two words or with any connecting mark is now outdated and shouldn’t appear in current writing, emails, or essays. Stick with the single word tomorrow.

When Did “Tomorrow” Become One Word?

The shift happened gradually. Middle English used “to morwe” or “to morewe.” Over centuries of everyday use, the phrase fused into the single word we use now, and dictionaries standardized it as one unbroken word by the modern era. The related word “morrow” survived on its own too, though it’s now considered old fashioned or literary rather than everyday vocabulary.

Other Words With the Same Double Letter Trap

Tomorrow isn’t alone. Several common English words trip writers up the same way.

Word	Common Misspelling
Accommodate	Accomodate
Occurrence	Occurence
Necessary	Neccessary
Embarrass	Embarass
Recommend	Reccomend

If tomorrow gives you trouble, double check these too. The same instinct to over double a consonant shows up across all of them.

“Tomorrow, and Tomorrow, and Tomorrow”: The Famous Line

This phrase comes from William Shakespeare’s Macbeth, spoken in a soliloquy about time slipping away in small repeated steps. It’s one of the most quoted lines in English literature and often shows up in essays, songs, and speeches about the passage of time, which is part of why the word tomorrow carries extra weight beyond its literal calendar meaning.

Synonyms and Alternatives for Tomorrow

Depending on context, you can swap tomorrow for:

• The next day
• The following day
• The day ahead
• The morrow (literary or old fashioned)

For formal writing, using an actual date instead of “tomorrow” often reads clearer, especially in emails, contracts, or scheduling messages where the reader might open your message a day later than you intended.

What Comes After Tomorrow?

The day after tomorrow doesn’t have a single common one word name in everyday English the way “yesterday” and “tomorrow” do. Most speakers simply say “the day after tomorrow.” Some older or regional dialects use “overmorrow,” but it never became standard and would confuse most modern readers.

Final Answer

Tomorrow, spelled with one M and two R’s, is the only correct form. Tommorow, tommorrow, tomarrow, and every other variant are simple misspellings born from how the word sounds rather than how it’s built. Remember the split, to plus morrow, and you’ll never second guess this word again.