If you are choosing between tomorrow and tommorow, use tomorrow.
The two forms do not represent two different English words. Tomorrow is the standard spelling, while tommorow is a misspelling.
The confusion usually comes from the letters in the middle. The correct form has one m and two r’s:
t-o-m-o-r-r-o-w
That small detail makes the difference. Once you recognize the letter pattern, the choice becomes much easier.
Quick Answer
Tomorrow is correct. Tommorow is incorrect.
- ✅ tomorrow — standard English spelling
- ❌ tommorow — misspelling
Tomorrow usually means the day after today.
For example:
I will call you tomorrow.
The spelling stays tomorrow in casual messages, school writing, workplace communication, and formal writing.
There is no standard situation where tommorow becomes the preferred spelling.
A simple memory rule is:
One M, two R’s: tomorrow.
Why People Confuse Them
People often confuse these forms because the word is familiar but its spelling is not completely obvious from its sound.
When spoken quickly, the middle sounds can blend together. That can make it easy to place the double letters in the wrong position.
The common mistake is adding a second m:
❌ tommorow
The correct word doubles the r instead:
✅ tomorrow
Another reason is typing speed. Because tomorrow is used so often, writers may type it automatically without checking each letter.
The mistake does not create a new meaning. It simply produces a nonstandard spelling of the intended word.
Key Differences At A Glance
| Context | Best Choice | Why |
|---|---|---|
| Standard English | tomorrow | It is the accepted spelling. |
| School writing | tomorrow | The spelling is correct and standard. |
| Work email | tomorrow | It is appropriate for professional writing. |
| Text message | tomorrow | Casual writing still uses the standard form. |
| Formal writing | tomorrow | It is the standard written form. |
| tommorow | Do not use | It is a misspelling, not an alternate form. |
The key difference is therefore spelling status, not meaning.
Meaning and Usage Difference
Tomorrow refers to the day after today.
It can work as an adverb:
We are leaving tomorrow.
Here, tomorrow tells us when the action will happen.
It can also work as a noun:
Tomorrow is another busy day.
In this sentence, tomorrow names the coming day.
The word can also refer more generally to the future:
Nobody knows what tomorrow will bring.
Tommorow has none of these meanings. It is simply an incorrect spelling of tomorrow.
So you should not treat the two forms as meaning-based choices. There is no special context in which tommorow means something different.
Tone, Context, and Formality
Tomorrow works in every normal level of English.
You can use it in a text:
See you tomorrow!
You can use it in a workplace message:
I will send the revised file tomorrow.
The committee will meet tomorrow to review the proposal.
Tommorow does not have a different tone. It is not a casual version, slang form, or regional spelling.
A reader will usually understand what you mean, but the spelling is still incorrect. In polished writing, use tomorrow regardless of the audience or setting.
The same standard spelling applies in American English and British English.
Which One Should You Use?
Choose tomorrow every time.
Use it when you mean the day after today:
The appointment is tomorrow.
Use it in common time expressions:
- tomorrow morning
- tomorrow afternoon
- tomorrow evening
- tomorrow night
- by tomorrow
- until tomorrow
For example:
Please send the form by tomorrow.
Do not change the spelling to tommorow for texting, casual conversation, or informal notes. Informal writing may use shorter expressions, but it does not make this misspelling correct.
If you are unsure, remember the letter pattern rather than relying only on pronunciation.
When One Choice Sounds Wrong
The spelling tommorow does not have a separate pronunciation or meaning that makes it appropriate in a particular context.
Consider this sentence:
I will finish the project tomorrow.
Changing the spelling to:
I will finish the project tommorow.
does not change the meaning. It only introduces a spelling error.
The same issue appears in short phrases:
See you tomorrow.
Tomorrow morning works for me.
Let’s talk about it tomorrow.
In each case, tomorrow is the correct written form.
If you see tommorow in a message, the intended word is clear from context. Still, when you are writing your own sentence, there is no reason to choose the misspelled form.
Common Mistakes (and Quick Fixes)
The most common error is doubling the wrong consonant.
Incorrect:
I will call you tommorow.
Correct:
I will call you tomorrow.
Another mistake is dropping one of the two r’s.
Incorrect:
The meeting is tomorow.
Correct:
The meeting is tomorrow.
Some writers also produce forms such as tommorrow or tomarrow. These are also incorrect.
The easiest correction is to focus on the middle:
tomorrow = one m + two r’s
You can also break the word visually into:
to + morrow
The second part helps you remember where the double r belongs.
Everyday Examples
Here are natural examples using the correct form.
Making plans
Are you free tomorrow?
Work
I will review the report tomorrow morning.
School
Our class starts again tomorrow.
Appointments
The doctor has an opening tomorrow afternoon.
Travel
Our flight leaves tomorrow night.
Deadlines
Please submit the application by tomorrow.
Conversation
We can talk about it tomorrow.
Future reference
Tomorrow may bring a completely different situation.
Notice that the spelling never changes because the setting changes. Whether you are texting a friend or writing to a manager, use tomorrow.
Dictionary-Style Word Details
Verb
Tomorrow: Not commonly used as a verb in standard US English.
Tommorow: Not a standard verb. It is a misspelling of tomorrow.
Neither form should be treated as a verb in ordinary English writing.
Noun
Tomorrow: Can function as a noun meaning the day after today or, in some contexts, the future.
Tomorrow is the first day of the new schedule.
Tommorow: Not a standard noun. It is an incorrect spelling of tomorrow.
Synonyms
Tomorrow: For the time meaning, a close plain alternative is the next day. When referring more generally to the future, the future can fit some contexts.
Tommorow: No synonyms apply because it is not a standard English word.
No true antonym is needed for this comparison. Tomorrow refers to a time point, while tommorow is simply a spelling error.
Example Sentences
Tomorrow:
I have an interview tomorrow.
Tomorrow will be a busy day.
We can finish the discussion tomorrow.
Tommorow:
❌ I have an interview tommorow.
✅ I have an interview tomorrow.
Word History
Tomorrow developed from older English expressions involving to and morrow. Merriam-Webster traces the word through Middle English to Old English elements connected with the following day.
Tommorow does not have a separate word history. It is a misspelling of the standard form tomorrow.
Phrases Containing
Tomorrow:
- tomorrow morning
- tomorrow afternoon
- tomorrow evening
- tomorrow night
- by tomorrow
- until tomorrow
- see you tomorrow
- tomorrow’s meeting
Tommorow: No standard phrases use this spelling.
FAQs
Is “tommorow” ever a correct spelling?
No, tommorow is not the standard spelling. It is a misspelling of tomorrow, which means the day after today. Use tomorrow in texts, school assignments, workplace messages, applications, and other forms of normal written English.
Can “tomorrow” and “tommorow” be used interchangeably?
No, they should not be treated as interchangeable spellings. Tomorrow is the accepted form, while tommorow is an error. A reader may understand tommorow from context, but that does not make it a valid alternative.
Is “tomorrow” a noun or an adverb?
Tomorrow can function as both a noun and an adverb. As an adverb, it tells when something happens. As a noun, it can refer to the coming day or, in some contexts, the future.
Why do people often spell “tomorrow” with two M’s?
People may add a second M because the spoken word does not clearly reveal its letter pattern. Fast speech and typing can also make the middle letters easier to misremember. The correct pattern has one M followed by two R’s.
Is “tomorrow” spelled the same in American and British English?
Yes, the standard spelling is tomorrow in both American and British English. There is no separate regional spelling that changes the M and R pattern. For either audience, write tomorrow with one M and two R’s.
What is the easiest way to remember the spelling of “tomorrow”?
The simplest memory aid is “one M, two R’s.” Write the word as t-o-m-o-r-r-o-w and focus on the middle letters. If you see two M’s, you have written tommorow and should correct it.
Conclusion
When choosing between tomorrow and tommorow, always choose tomorrow.
The two forms do not have different meanings. Tomorrow is the standard English word, while tommorow is a misspelling.
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