To-not vs. Not-to: What's the Difference?
Not to is formal and safe; to not is modern and common. Both are correct.
Grammar Rule in 30 Seconds
Use 'not to' for formal writing and 'to not' for emphasis or to avoid sounding like a robot.
- Standard: Put 'not' before 'to' for most situations. Example: 'I decided not to go.'
- Emphasis: Put 'not' after 'to' to stress the negative action. Example: 'I want you to NOT touch that.'
- Clarity: Use 'to not' if 'not to' makes the sentence sound confusing or awkward.
Overview
For an English learner, the choice between not to do and to not do can feel like a confusing, unspoken rule. You may have heard that one is correct and the other is an error. The reality is more nuanced and interesting: both not to + verb and to not + verb are grammatically correct in modern English.
The difference between them lies not in correctness, but in formality, emphasis, and style.
The form not to + verb is the traditional, more formal structure. It is universally accepted in all contexts, from academic papers to everyday conversation. It is the safe, default choice. For example, The company decided not to proceed.
The form to not + verb is what grammarians call a split infinitive, because an adverb (not) is placed between the particle to and the verb. For centuries, prescriptive grammar guides, influenced by Latin (where infinitives are single, unsplittable words), incorrectly labeled this as an error. However, this structure has been used by respected English writers for centuries and is extremely common in contemporary speech and informal writing.
It often serves to place a stronger and more deliberate emphasis on the negation itself. For instance, I’m trying to not worry about it emphasizes the active effort of not worrying.
Understanding when and why to use each form moves you beyond simply following rules and into the realm of making sophisticated stylistic choices. This guide will equip you to use both constructions confidently, helping your English sound more precise and natural.
How This Grammar Works
to, as in to see, to understand, or to write. An infinitive can function as a noun, an adjective, or an adverb.not.not changes the focus of the sentence in a subtle but important way. This happens because adverbs in English tend to modify the word they are placed next to. Think about the difference between I only ate three apples and I ate only three apples. The same principle applies here.not to + verbnot to + verb, the word not negates the entire infinitive phrase as a single unit. It's like putting a negative sign in front of a whole concept.- Structure:
[not] [to do something] - Example:
They advised us not to travel. - Analysis: The advice applies to the entire activity of 'traveling'. The negation is broad and presented as a single instruction or decision. The tone is often neutral and objective. This construction treats the
to-infinitiveas an inseparable block of meaning and negates it from the outside.
to not + verbto not + verb, the adverb not is placed directly before the verb. This creates a much tighter connection between the negation and the action, often making the negation feel more pointed and emphatic.- Structure:
[to] [not do] [something] - Example:
They chose to not intervene. - Analysis: The emphasis here is on the deliberate, conscious choice of non-intervention. Placing
notright beforeintervenehighlights the specific action being withheld. This structure is often used to signal a conscious decision, an active effort, or a more personal feeling about the negation.
She seems not to care. | not to + verb | A general observation of her apparent lack of caring. It's a description of her state. |She seems to not care. | to not + verb | Implies she is actively, perhaps deliberately, choosing not to care. The focus is on her action of not caring. |Formation Pattern
decide, promise, try), an adjective (important, happy), or a noun (decision, promise).
not before the to.
[Verb/Adjective/Noun] + not to + [Base Verb]
agreed + not to | He agreed not to discuss the matter publicly. |
important + not to | It is important not to lose your concentration. |
decision + not to | Her decision not to accept the job was surprising. |
not between to and the verb.
[Verb/Adjective/Noun] + to not + [Base Verb]
chose + to not | He chose to not participate in the protest. |
determined + to not | She was determined to not let them down. |
promise + to not | It was his promise to not interfere that we trusted. |
not is an adverb. English speakers frequently 'split' infinitives with other adverbs to add meaning, like to really understand or to completely fail. The negative split infinitive, to not do, follows this exact same broader pattern. It's not a special, isolated rule but a logical application of English adverb placement.
When To Use It
not to is always safe, but learning to use to not will make your English more dynamic. The key factors are formality, emphasis, and clarity.not to + verb | The committee resolved not to approve the budget. | Tradition & Objectivity. This is the undisputed standard in formal registers. It maintains a neutral, objective tone and avoids any stylistic debate. |not to + verb | The Tenant agrees not to alter the property. | Avoiding Ambiguity. This traditional form is legally established and carries no risk of being misinterpreted as stylistically informal or imprecise. |I'm trying to not eat so much sugar. | Natural Flow & Emphasis. The split infinitive is very common in speech. It often feels more natural and allows for vocal stress on not. |to not + verb | I made a vow to not complain for a whole week. | Intensifying the Negative. Placing not directly before the verb highlights a conscious, resolute, and often personal decision to refrain from an action. |to not + verb | The goal is to not just meet expectations, but to exceed them. | Precision. Using not to could be ambiguous (not to just meet...). The split infinitive to not just meet clearly isolates the negation to the word just. |Try not to make a mess. / Try to not make a mess. | Both are clear. The first is a standard instruction. The second (to not) might add a slight degree of urgency or personal appeal. |not to + verb. It is always correct and projects a professional tone. In your own speech, texts, and informal emails, use the form that feels most natural to you.to not + verb is an excellent tool.Common Mistakes
- 1Using
don'tinstead ofnot.
- Incorrect:
*I decided to don't go to the party. - Why it's wrong: The infinitive
to gois a non-finite verb form. It doesn't have a tense and cannot be negated with auxiliary verbs likedo,does, ordid. The negation must be done with the adverbnot. - Correct:
I decided not to go to the party.
- 1Confusing the negation of the main verb with the negation of the infinitive.
I didn't promise to help. | I never made the promise. The act of promising did not happen. |I promised not to help. | I made a promise. The content of the promise was negative: "I will not help." |- 1Placing
notin the wrong position (after the verb).
- Incorrect:
*They warned us to be not late. - Why it's wrong: In English, the negating adverb
notalmost always comes before the verb, adjective, or phrase it is modifying. It must precede the infinitive (not to be) or the base verb (to not be). - Correct:
They warned us not to be late.orThey warned us to not be late.
- 1Rigidly over-correcting the split infinitive.
- The Mistake: A learner hears or reads
I'll try to not be biasedand thinks it's an error that must be 'fixed' toI'll try not to be biased. - Why it's a mistake: While the 'fixed' sentence is also correct, it loses the subtle emphasis of the original. Believing the split infinitive is always wrong is an outdated idea. In modern English, it's a valid stylistic choice. Don't be afraid to use it, especially when it makes your meaning clearer or more emphatic.
Real Conversations
Seeing how these forms appear in the wild is the best way to understand them. Notice how to not often appears in personal, decisive statements, while not to is a neutral default.
Example 1
- Alex: hey you still coming to the movie tonight?
- Ben: Ugh I've decided to not go. I'm exhausted and need to save money.
- Analysis: Ben uses to not go to emphasize his active, personal decision. not to go would also be fine, but to not go sounds slightly more resolute.
Example 2
> Subject: Weekend Work
>
> Hi Team,
>
> A quick reminder to try to not check your email too much over the long weekend—we all need a break! However, please remember not to turn off notifications for the emergency alert system, just in case.
>
> Thanks,
> Sarah
- Analysis: Sarah uses both forms perfectly. to not check is a friendly, slightly emphatic piece of advice. not to turn off is a more formal, standard instruction about a clear rule.
Example 3
> "My doctor told me not to worry so much about my blood pressure. But it's hard. I really have to make a conscious effort to not get stressed in traffic every morning. It’s a daily battle!"
- Analysis: The speaker first reports the doctor's advice using the standard, neutral not to worry. Then, when describing their own personal struggle, they switch to the more emphatic to not get stressed to highlight their active, internal effort.
Quick FAQ
- Q: So, is it really okay to say
to not? I was taught it was a mistake. - A: Yes, it is 100% grammatically acceptable in modern English. The idea that it's a mistake is an outdated, prescriptive rule that most grammar authorities and style guides (like the Oxford English Dictionary) no longer support. It is a feature of the language, not a bug.
- Q: Which form should I use on my English exam (like IELTS or TOEFL)?
- A: To be completely safe, use
not to + verb. This traditional form is universally considered correct and formal. It will never be marked as an error. You are not graded on stylistic flair, so taking the safest route is the smartest strategy.
- Q: Does using
to notinstead ofnot tochange the fundamental meaning? - A: No, the core meaning of negation remains the same. The change is in style, tone, and emphasis.
to not + verbtends to put a finer point on the negation, making it feel more deliberate or conscious.
- Q: Can I just always use
not to + verband ignore the split infinitive? - A: Absolutely. You can speak and write perfectly correct English for your entire life using only the
not toconstruction. It is always a valid and safe choice. Learning to use the split infinitive is an extra tool for adding nuance, not a requirement for fluency.
Negating the Infinitive
| Type | Structure | Example | Tone |
|---|---|---|---|
|
Standard
|
Not + to + verb
|
I decided not to go.
|
Formal/Neutral
|
|
Split (Emphatic)
|
To + not + verb
|
I decided to not go.
|
Informal/Strong
|
|
With Adverb
|
To + adverb + not + verb
|
I try to really not care.
|
Very Informal
|
|
Perfect Infinitive
|
Not + to + have + past participle
|
I'm sorry not to have called.
|
Formal
|
|
Passive Infinitive
|
Not + to + be + past participle
|
He asked not to be disturbed.
|
Neutral
|
Meanings
The placement of the negative particle 'not' in relation to an infinitive verb (to + base form).
Standard Negation
The traditional way to negate an infinitive by placing 'not' before the entire infinitive phrase.
“I prefer not to say.”
“He was told not to enter.”
Emphatic Split
Placing 'not' between 'to' and the verb to strongly emphasize the negative state.
“It's important to not fail.”
“I need you to not scream.”
Ambiguity Avoidance
Using 'to not' to ensure the 'not' applies only to the infinitive and not the preceding verb.
“He agreed to not go (He agreed to stay).”
“He didn't agree to go (He refused).”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
To + Verb
|
I want to go.
|
|
Standard Negative
|
Not + To + Verb
|
I want not to go.
|
|
Emphatic Negative
|
To + Not + Verb
|
I want to not go.
|
|
Question Negative
|
Is it better + not + to + Verb?
|
Is it better not to go?
|
|
Short Answer
|
Subject + Verb + not to
|
I'd prefer not to.
|
|
With 'Never'
|
Never + to + Verb
|
I hope never to see him again.
|
|
Emphatic 'Never'
|
To + never + Verb
|
I want to never see him again.
|
Formality Spectrum
I decided not to comment on the matter. (Legal/Social)
I decided not to say anything. (Legal/Social)
I decided to not say a word. (Legal/Social)
I chose to just not. (Legal/Social)
Negating the Infinitive
Standard
- Not to go Formal/Safe
Split
- To not go Emphatic/Modern
Mistakes
- No to go Incorrect
- To don't go Incorrect
Formal vs. Informal Negation
Which one should I use?
Is it for a formal essay?
Do you want to emphasize the 'NOT'?
Common Verbs using 'Not To'
Decisions
- • Decide
- • Choose
- • Agree
Promises
- • Promise
- • Swear
- • Vow
Efforts
- • Try
- • Strive
- • Attempt
Examples by Level
I try not to be late.
Please tell him not to go.
It is good not to smoke.
I want not to eat meat.
We decided not to buy the car.
She promised not to tell anyone.
Try not to make a noise.
It's hard not to like him.
I'd prefer to not discuss this right now.
He was careful not to wake the baby.
It is important to not overthink the problem.
They agreed not to sign the contract yet.
The challenge is to not lose focus during the exam.
He was advised not to respond to the provocative comments.
To not have invited her would have been rude.
She struggled not to show her disappointment.
The goal of the policy is to not only reduce costs but also improve quality.
One must learn to not be swayed by public opinion.
He chose to not explicitly deny the allegations.
The directive was to not under any circumstances open the vault.
To not so much as acknowledge his presence was a calculated insult.
The actor's ability to not overplay the role was praised by critics.
In his quest to not be forgotten, he built monuments across the city.
The difficulty lies in learning to not merely survive, but thrive.
Easily Confused
Learners use 'don't' for both.
Negating these changes the meaning drastically.
The position of 'not' changes whether you forgot the action or remembered to avoid it.
Common Mistakes
I want to no go.
I want not to go.
He said me not go.
He told me not to go.
I try to don't cry.
I try not to cry.
Not go is bad.
Not to go is bad.
I decided to not.
I decided not to.
She told me to not eat.
She told me not to eat.
It's important no to forget.
It's important not to forget.
I remembered to not call.
I remembered not to call.
He asked me to not be late.
He asked me not to be late.
I prefer to not.
I prefer not to.
To not really have tried is a shame.
Not to have really tried is a shame.
Sentence Patterns
It is important not to ___.
I've decided to not ___ anymore.
She was warned not to ___.
The best way to not ___ is to ___.
Real World Usage
I try not to let stress affect my performance.
Try to not be late pls!
The party agrees not to disclose confidential information.
How to not care what people think.
Try not to move your arm.
Be careful to not overcook the pasta.
The 'Star Trek' Test
Avoid 'No'
Formal Default
Emphasis
Smart Tips
Always place 'not' before 'to'. It makes you sound more educated and respectful of traditional grammar.
Split the infinitive and put extra stress on the word 'NOT'.
Don't be afraid to split it. Clarity is more important than old rules.
Treat 'never' just like 'not'. 'Never to' is formal; 'to never' is emphatic.
Pronunciation
Emphasis on 'Not'
In 'to not', the word 'not' is usually stressed and has a higher pitch.
Schwa in 'To'
In 'not to', the 'to' is often reduced to a schwa /tə/.
Emphatic Split
I need you to ↗NOT↘ do that.
Strong warning or correction.
Memorize It
Mnemonic
Put 'Not' before 'To' to be a pro. Put 'Not' in the middle to solve the riddle (of emphasis).
Visual Association
Imagine a 'No Entry' sign standing right in front of a door labeled 'TO'. That's 'Not To'. Now imagine the sign is inside the room. That's 'To Not'.
Rhyme
If you want to be polite, 'not to' is usually right.
Story
A student named Tim always tried 'not to' fail his exams. But one day, his teacher said, 'Tim, I need you to NOT fail this time!' The teacher split the infinitive because the situation was urgent.
Word Web
Challenge
Write three things you are trying 'not to' do this week, and one thing you are determined 'to NOT' do ever again.
Cultural Notes
Traditionally more resistant to split infinitives in formal education, though this is changing.
More flexible with 'to not' in journalism and media to sound more direct.
Some old-fashioned professors still consider 'to not' a mistake. When in doubt, use 'not to'.
The 'rule' against splitting infinitives was popularized by Henry Alford and other 19th-century grammarians who idolized Latin.
Conversation Starters
What is one thing you try not to do on the weekend?
If you could choose to not have one chore, what would it be?
Have you ever been told not to do something, but you did it anyway?
In your opinion, is it better to not know the future?
Journal Prompts
Common Mistakes
Test Yourself
He decided ___ the job.
Find and fix the mistake:
I try to don't eat sugar.
I need you to ___ (not / forget) the milk!
Don't be late. (He told me...)
'To not know is better than to lie.'
A: Are you coming to the party? B: I'd prefer ___.
1. Not to smoke. 2. To not smoke.
Match each item on the left with its pair on the right:
Score: /8
Practice Exercises
8 exercisesHe decided ___ the job.
Find and fix the mistake:
I try to don't eat sugar.
I need you to ___ (not / forget) the milk!
Don't be late. (He told me...)
'To not know is better than to lie.'
A: Are you coming to the party? B: I'd prefer ___.
1. Not to smoke. 2. To not smoke.
1. I remembered not to call. 2. I didn't remember to call.
Score: /8
Practice Bank
12 exercisesThe first rule of book club is ___ talk about book club. Wait, that's not right.
My personal goal this year is ___ worry so much about small things.
Choose the correct sentence:
Choose the correct sentence:
She reminded me to forget not the keys.
It is better to have loved and lost than never to have loved not at all.
Translate into English: 'El médico me dijo que no comiera azúcar.' (The doctor told me not to eat sugar.)
Translate into English: 'Decidí no ir a la fiesta.' (I decided not to go to the party.)
Arrange these words into a sentence:
Arrange these words into a sentence:
Match the sentence halves based on formal or informal style:
Match the verb with its negative infinitive phrase:
Score: /12
FAQ (8)
No, not in modern English. It was a rule made up in the 1800s to make English more like Latin. Today, it's perfectly fine, especially for clarity.
In very formal academic writing or legal documents, it's safer to use `not to` to avoid looking 'unprofessional' to traditionalists.
Sometimes. It can shift the focus. `He agreed not to go` means he said yes to staying. `He didn't agree to go` means he refused to go.
Yes! `To never see you again` is a common split infinitive used for strong emotion.
It's a historical preference. Some people were taught that 'to + verb' is a single unit that should never be broken.
Shakespeare said `To be, or not to be`. This is the standard. `To not be` sounds very modern and emphatic.
No, 'should' is a modal verb. You say `should not go`, not `should not to go`.
Using `no` instead of `not` (e.g., `I want to no go`). Always use `not`!
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
no + infinitivo
English requires 'not' instead of 'no'.
ne pas + infinitif
French negation is two words, English is one.
nicht zu + Infinitiv
German word order is more rigid about the 'zu' placement.
verb-nai + koto
Japanese negation is part of the verb, not a separate word before it.
an + la + verb
The order is fixed in Arabic, unlike the flexible English split.
bu + verb
Chinese speakers often forget the 'to' in English.
Learning Path
Prerequisites
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