Many people get confused about how to spell “tomorrow” correctly. Some write tomorrow or tomorrow because the word sounds tricky when spoken. It is one of the most common spelling mistakes in English writing.
Learning the correct spelling of tomorrow is actually very easy with a simple memory trick. In this guide, you will learn the right spelling, common mistakes, and easy tips to remember the word forever.
You’re Not Alone
The word “tomorrow” confuses many English learners and native speakers alike. Research from top spelling and dictionary websites shows that this word consistently appears on lists of commonly misspelled English words.
One reason is pronunciation. When spoken naturally, the middle part sounds strong:
“tuh-MORR-oh”
Because the “RR” sound is emphasized, many people think the letter M should also be doubled. That is why spellings like these are very common:
- tomorrow
- tomorrow
- tomorrow
- tomorrow
The good news is that once you understand the pattern, the correct spelling becomes much easier to remember.
Why This Mistake Happens
There are several reasons why people spell tomorrow incorrectly.
1. Phonetic Confusion
English spelling does not always match pronunciation. The strong “MORR” sound tricks the brain into doubling both consonants.
People hear:
- MORR
So they type:
- MMORR
But the correct spelling only contains:
- One M
- Two Rs
2. Typing Muscle Memory
When typing quickly, fingers often repeat patterns automatically. Since “RR” is doubled, many writers accidentally double the M as well.
3. English Double-Letter Patterns
English contains many words with double consonants:
- accommodate
- committee
- necessary
Because of this, writers often assume “tomorrow” follows the same pattern with double M and double R together.
4. Lack of Word Structure Knowledge
Most people do not know that “tomorrow” originally came from two separate words:
- to
- morrow
Once you understand this structure, the spelling becomes logical.
Word Origin
The word “tomorrow” comes from the Middle English phrase:
to morwe
It originally meant:
- “on the next morning”
- “on the following day”
Over time, “to morrow” merged into the single word we use today.
Etymology Path
| Time Period | Word Form |
| Old English | to morgen |
| Middle English | to morwe |
| Modern English | tomorrow |
The word “morrow” itself means:
- morning
- next day
This explains why the spelling works like this:
TO + MORROW = TOMORROW
There is only:
- one M
- two Rs
That historical structure is the key to remembering the correct spelling.
The Spelling Trick

A simple memory trick can help you remember the spelling forever:
“One M today, two Rs toMoRRow.”
This works because it visually highlights the exact letter pattern.
Break the word into parts:
| Part | Letters |
| To | TO |
| One M | M |
| Two Rs | RR |
| Ending | OW |
So the correct spelling becomes:
T-O-M-O-R-R-O-W
Why This Trick Works
This spelling trick is effective because:
- it focuses on the confusing letters
- it creates a visual memory
- it uses rhythm and repetition
- it separates M from RR clearly
Whenever you hesitate while typing, remember:
One M today, two Rs tomorrow.
Alternative Mnemonics
Here are a few more easy tricks:
- “Tom will come tomorrow.”
- “Tomorrow starts like today: TO.”
- “Morrow already has two Rs.”
- “Tom + orrow = tomorrow.”
Choose the mnemonic that feels easiest for you to remember.
Examples in Context
Reading correct examples helps train your brain to recognize proper spelling naturally.
Daily Conversation
- I will call you tomorrow.
- Let’s meet tomorrow afternoon.
- Tomorrow will be a busy day.
School and Work
- The assignment is due tomorrow.
- We have an exam tomorrow morning.
- Tomorrow’s meeting starts at 10 AM.
Read This Businesses or Business’s: Meaning, Differences And Usage
Common Expressions
- Don’t put off until tomorrow what you can do today.
- Tomorrow is another day.
- Think about tomorrow, not yesterday.
Using the word regularly in sentences improves spelling memory over time.
Common Mistakes to Avoid

Many incorrect spellings appear online and in text messages. Here are the most common ones.
| Incorrect Spelling | Problem |
| tomorrow | Extra M |
| tomorrow | Extra M and extra R |
| tomorrow | Missing R |
| tomorrow | Wrong vowel |
| tomorrow | Missing letters |
Quick Tip
Remember this structure:
TO + MORROW
Not:
- TOM + MORROW
That single rule prevents most spelling mistakes instantly.
Quick Reference
| Correct | Incorrect |
| tomorrow | tomorrow |
| tomorrow | tomorrow |
| tomorrow | tomorrow |
| tomorrow | tomorrow |
💡 Easy Memory Trick:
One M today, two Rs toMoRRow
Frequently Asked Questions
Is it “tomorrow” or “tomorrow”?
The correct spelling is tomorrow with one M and two Rs.
Why do people add an extra M to tomorrow?
People hear a strong “MORR” sound while speaking, so the brain mistakenly doubles the M.
What’s the trick to remembering tomorrow’s spelling?
Use this mnemonic: “One M today, two Rs tomorrow.”
What are common misspellings of tomorrow?
Common mistakes include:
- tomorrow
- tomorrow
- tomorrow
- tomorrow
Is tomorrow a compound word?
Historically, yes. It developed from the phrase “to morrow.”
Are there other words with this pattern?
Yes. English has many words with confusing double letters, including:
- accommodate
- committee
- embarrass
- necessary
Conclusion
The correct spelling is tomorrow, with one M and two Rs. Many people misspell this word because of its pronunciation, but simple tricks can make it much easier to remember. Understanding the word structure also helps you avoid common mistakes like tomorrow and tomorrow.
A great way to remember the spelling is: “One M today, two Rs tomorrow.” With regular practice and easy memory techniques, you can confidently spell tomorrow correctly in school, work, and everyday writing.

David is the founder of englishlooms.com, a site dedicated to Grammer and Prayers clever wordplay. He loves turning language into laughter and making words wonderfully witty.