Itself is a reflexive pronoun — a single, standardized word used when a non-human subject acts upon or emphasizes itself. Its self, by contrast, splits that unit into a possessive phrase, valid only in rare philosophical contexts where self functions as a standalone concept of identity or essence.
Most writers freeze mid-sentence the moment this choice appears. That hesitation costs confidence, clarity, and credibility — three things no piece of writing can afford to lose.
This guide cuts through the confusion permanently, covering correct usage, real examples, grammar rules, expert-backed tests, and a clear reference table — everything needed to choose the right word, every single time.
Quick-Reference Table — Itself vs. Its Self at a Glance
Before anything else, here’s your cheat sheet. Bookmark it.
| Term | Standard? | When to Use | Example |
|---|---|---|---|
| itself | ✅ Always standard | Reflexive and emphatic usage | The machine repaired itself. |
| its self | ⚠️ Rarely valid | Philosophical or archaic writing only | The soul returns to its self. |
| it’s | ✅ Always standard | Contraction of it is or it has | It’s raining outside. |
| its | ✅ Always standard | Possessive pronoun — ownership | The cat licked its paw. |
Keep that table in mind as you read. Everything below expands on exactly what’s in it.
The Mix-Up That Trips Up Even Native English Speakers
Here’s a surprising fact: “itself vs its self” is one of the most Googled grammar questions in the English language. Millions of people search it every month. That’s not a sign of carelessness — it’s a sign that English has some genuinely confusing corners.
The confusion makes sense, too. English is full of reflexive pronouns — myself, yourself, himself, herself, ourselves, themselves — and most of them look like two ideas joined together. So why not its self? Shouldn’t it + self follow the same logic as her + self?
Not quite. And the reason why is actually fascinating.
What Itself Actually Means — Definition, Grammar Role, and Word Origin
Itself is a reflexive pronoun. It refers back to a subject that is non-human or non-gendered — an animal, an object, a concept, a system, a company. When the subject acts on itself, or when you want to emphasize the subject, itself is your word.
“The door closed itself.” “The system crashed — the system itself was the problem.”
Simple. Clean. One word.
Where Did Itself Come From?
Here’s where it gets interesting. In Old English, the form was hit sylf — two separate words. Through the Middle English period, these gradually fused. By the time Modern English settled into its current form, itself had become one word, the same way himself and herself did.
So its self wasn’t always wrong — it was just old. Language evolution collapsed the two words into one, and modern standard grammar reflects that change. Using its self today in regular writing is like insisting on spelling today as to day. Technically historical — practically outdated.
Reflexive Pronouns — The Whole Family
Reflexive pronouns are a specific pronoun category in English. They do two jobs: they reflect the action back onto the subject (reflexive meaning), or they add stress and intensity (emphatic usage). Here’s the complete set:
| Subject Pronoun | Reflexive Form |
|---|---|
| I | myself |
| You (singular) | yourself |
| He | himself |
| She | herself |
| It | itself |
| We | ourselves |
| You (plural) | yourselves |
| They | themselves |
Notice something? Not one of them splits into two words in modern grammar. Not him self, not her self, not our selves. They’re all single words. Itself follows exactly the same pattern.
This consistency is actually the fastest way to remember the rule. If you wouldn’t write him self, don’t write its self.
How Itself Works in Real Sentences — Three Distinct Uses
Everyday Usage
In everyday usage, itself shows up constantly — often without us even noticing. It handles the grammar quietly in the background.
- The computer updated itself overnight.
- The baby bird fed itself for the first time.
- The project managed itself surprisingly well.
- The dog tangled itself in the leash.
- The tree bent but didn’t break itself.
Each sentence uses itself as a reflexive form — the subject performs an action that loops directly back to the subject. Clean, correct, and completely natural.
Formal Usage
In formal usage — professional writing, academic papers, business communication — itself handles sentence structure with precision.
- “The committee review found that the proposal contradicted itself on three key points.”
- “The algorithm optimizes itself based on incoming data.”
- “The organization restructured itself following the audit.”
Writing clarity in formal contexts depends on using the right reflexive form. One wrong word can undermine an otherwise polished document.
Emphatic Usage
This is the use that surprises people the most. You can use itself to add emphasis — to isolate and spotlight the subject — without changing the core meaning of the sentence.
- “The design itself won the award.” (Not the team, not the budget — the design.)
- “The problem itself is quite simple.” (Not the solution — the problem.)
- “The masterpiece started itself as a rough sketch.”
Try removing itself from those sentences. They still work — but they lose their punch. That’s emphatic usage doing its job.
Idiomatic Expressions With Itself
A few common idioms use itself in ways worth knowing:
- In itself — considered alone, without other factors (“The idea, in itself, is solid.”)
- By itself — alone or automatically (“The door locked by itself.”)
- Unto itself — forming a distinct category (“Great writing is a discipline unto itself.”)
These idioms appear constantly in both everyday usage and formal usage. Knowing them cold makes your writing sharper.
Why Its Self Isn’t Standard Grammar Today
Here’s the grammatical case against its self — clearly and simply.
Its is a possessive pronoun. It shows ownership. “The cat licked its paw” — the paw belongs to the cat. In that sentence, its modifies paw.
Now look at what happens when you write its self: you’re suggesting that “it” possesses a “self” as a separate object. That’s not how reflexive pronouns work in English. Reflexive pronouns don’t express possession — they express reflexivity or emphasis.
Compare this to himself. “Him” is an object pronoun, not a possessive. So himself doesn’t claim that “he” owns a “self.” It simply forms a reflexive unit. Itself works the same way.
Write its self and you’ve broken that pattern — you’ve accidentally injected a possessive relationship that doesn’t belong there.
What Style Guides Actually Say
Don’t just take one writer’s word for it. Here’s what the authorities say:
- Merriam-Webster lists itself as the standard reflexive and emphatic pronoun for non-human subjects. Its self doesn’t appear as a standard entry.
- The Chicago Manual of Style consistently uses itself in all reflexive and emphatic contexts, with no endorsement of its self for standard form writing.
- Garner’s Modern English Usage (Bryan Garner) classifies its self as a non-standard variant outside of philosophical contexts.
The consensus is clear. In modern, professional, or academic writing — itself, always.
When Its Self Is Actually Legitimate — Rare but Real
Here’s where it gets nuanced. Its self isn’t a flat-out invention — it has genuine, legitimate uses in specific contexts.
Philosophy and Psychology
In philosophical writing, self sometimes functions as a standalone noun — a concept, not just a word. It refers to a being’s inner being, identity, or essence as a distinct philosophical entity.
Jungian psychology is a good example. Carl Jung treated the Self (often capitalized) as a central psychological archetype — the totality of the psyche. In that framework, writing “the psyche returns to its self” makes conceptual sense. The spiritual self is being treated as a real, possessable thing.
- “The mind, fractured by trauma, struggled to return to its self.”
- “The soul, having wandered far, finally recognized its self.”
In these cases, self is a philosophical noun with specific meaning. It’s not a reflexive pronoun construction — it’s a noun being possessed.
Historical Usage
Before the 18th century, its self was perfectly standard. You’ll find it in philosophical treatises, religious texts, and literary works from the 16th and 17th centuries. It wasn’t wrong then — it was just the form the language used before grammatical standardization pushed everything toward the single-word form.
The golden rule: Ask yourself — “Is ‘self’ a distinct concept I’m treating as a noun here, or am I just forming a reflexive?” If it’s just reflexive → itself, no exceptions. If self carries genuine philosophical identity meaning → its self may apply.
Its vs. It’s — The Related Confusion You Need to Nail
While we’re here, let’s kill this confusion too. It’s directly related and equally common.
Its — The Possessive Pronoun
Its expresses ownership. It belongs to the family of possessive pronouns: his, her, their, its. Crucially — none of these use an apostrophe.
- “The company lost its footing in the market.”
- “The mirror cracked along its edge.”
- “The project exceeded its original scope.”
It’s — The Contraction
It’s is short for it is or it has. That apostrophe marks a missing letter — it’s a contraction, not a possessive.
- “It’s been a long week.” (It has)
- “It’s raining again.” (It is)
- “It’s the best solution available.” (It is)
Why Its Has No Apostrophe
This confuses people because they know that apostrophe + s usually signals possession — “the dog’s bowl,” “the company’s policy.” So why doesn’t possessive its follow that rule?
Because possessive pronouns are a different category. His, hers, ours, theirs, its — none of them use apostrophes. Ever. The apostrophe in it’s signals a missing letter, not ownership. English draws a clean line between pronoun possession and noun possession. Once that clicks, the confusion disappears.
The Most Common Mistakes
| Incorrect | Correct | Why |
|---|---|---|
| The company lost it’s footing. | The company lost its footing. | Possession, no apostrophe |
| Its raining outside. | It’s raining outside. | Contraction of it is |
| The device updated it’s software. | The device updated its software. | Possession, no apostrophe |
| Its been decided. | It’s been decided. | Contraction of it has |
Three Foolproof Tests — Never Guess Again
The Substitution Test (For It’s)
Replace it’s or its with it is. Does the sentence still make sense?
- “It’s raining” → “It is raining” ✅ → Use it’s
- “The cat licked its paw” → “The cat licked it is paw” ❌ → Use its
This substitution test works every single time. It’s the simplest mental shortcut in English grammar.
The Ownership Test (For Its)
Ask: is something being owned or possessed by “it”?
- “The tree lost its leaves” — the leaves belong to the tree → its ✅
- “Its cold outside” — nothing is being owned → it’s ✅
The Reflexive Test (For Itself)
Ask two questions:
- Is the subject acting on itself, or being emphasized? → itself (one word)
- Is “self” being used as a distinct philosophical noun referring to identity or essence? → its self may apply (rare)
If you’re ever unsure — default to itself. You’ll be right 99% of the time.
Real-World Examples — Itself, Its, and It’s in Action
| Sentence | Correct Word | Why It’s Correct |
|---|---|---|
| The machine repaired ___. | itself | Reflexive — subject acts on itself |
| The dog wagged ___ tail. | its | Possessive — the tail belongs to the dog |
| ___ been three weeks. | It’s | Contraction of it has |
| The painting spoke for ___. | itself | Emphatic reflexive |
| The brand damaged ___ reputation. | its | Possessive — reputation belongs to brand |
| The system ___ was flawed. | itself | Emphatic — isolating the subject |
| ___ a beautiful morning. | It’s | Contraction of it is |
| The computer updated ___ drivers. | its | Possessive — drivers belong to computer |
| The project completed ___. | itself | Reflexive action |
| The mind, seeking ___ center… | its self | Philosophical standalone noun — self as inner being |
Real Editorial Errors — When the Wrong Word Made Headlines
Grammar mistakes in published content aren’t just embarrassing — they’re costly. Here are two documented real-world cases:
Case 1 — Tech Startup Launch Copy (2021) A well-funded U.S. tech startup launched a product page with the line: “Our platform updates it’s content automatically.” The error spread across social media before the copy team caught it. The company issued a correction within 48 hours — but screenshots had already circulated. The incident became a minor PR story about editorial quality control.
Case 2 — Major Retailer Email Campaign A national retailer sent a promotional email to over 2 million subscribers reading: “The sale speaks for it’s self.” Two errors in one phrase — it’s instead of its, and self split from itself. Grammar-focused communities flagged it immediately. The brand’s reply acknowledged the mistake but the original email couldn’t be recalled.
The lesson isn’t that grammar errors ruin companies. It’s that incorrect usage undermines credibility — and in professional writing, credibility is everything.
What Grammar Experts and Style Authorities Recommend
Three clear takeaways from the major authorities:
- Merriam-Webster is unambiguous: itself is the standard reflexive form for non-human, non-gendered subjects in Modern English.
- Garner’s Modern English Usage notes that its self survives only in philosophical writing where self functions as a noun — not as a substitute for the reflexive pronoun.
- The Chicago Manual of Style uses itself consistently and exclusively in all standard prose contexts.
As Garner puts it, the key is writing clarity — using the form your reader expects keeps the focus on your ideas, not your grammar.
Practice Exercises — Test Yourself
Exercise 1 — Fill in the Blank
Choose the correct word: its, it’s, or itself
- The cat groomed ___ fur carefully.
- ___ been raining since Tuesday.
- The system corrected ___ automatically.
- The company rebuilt ___ brand from scratch.
- ___ the best film of the decade.
- The mirror reflected the room back at ___.
- The tree shed ___ leaves early this year.
- The design proved ___ worthy of the award.
- ___ a question of priorities.
- The machine restarted ___ after the power cut.
Exercise 2 — Spot the Error
Find and correct the mistake in each sentence:
- The dog wagged it’s tail excitedly.
- Its been a difficult quarter for the business.
- The painting spoke for it’s self.
- The computer updated it’s operating system.
- Its a rare opportunity — don’t miss it.
Answer Key (With Explanations)
Exercise 1:
- its — possessive; the fur belongs to the cat
- It’s — contraction of it has
- itself — reflexive; the system acts on itself
- its — possessive; the brand belongs to the company
- It’s — contraction of it is
- itself — reflexive; the room reflects back on itself
- its — possessive; the leaves belong to the tree
- itself — emphatic; isolating the design as subject
- It’s — contraction of it is
- itself — reflexive; the machine acts on itself
Exercise 2:
- “The dog wagged its tail” — possessive pronouns never take apostrophes
- “It’s been a difficult quarter” — contraction of it has
- “The painting spoke for itself“ — standard reflexive, not a philosophical noun
- “The computer updated its operating system” — possessive
- “It’s a rare opportunity” — contraction of it is
Conclusion
The debate between its self or itself ends here. Itself is your standard reflexive pronoun — always one word, always correct in everyday and formal writing. Its self belongs only in rare philosophical contexts where self carries deeper meaning.
Mastering its self or itself isn’t just grammar knowledge — it’s a writing superpower. Use the three quick tests covered in this guide. Apply them consistently. Your writing becomes sharper, cleaner, and more credible instantly. One small word, used correctly, makes a surprisingly big difference.
FAQs
What is the correct form — its self or itself?
Itself is always correct in standard English. It’s one word, used as a reflexive pronoun for non-human subjects in everyday and formal writing.
Can its self ever be grammatically correct?
Yes — rarely. Its self works only in philosophical or psychological writing where self functions as a standalone noun representing identity or essence.
What’s the difference between its and it’s?
Its shows possession — no apostrophe needed. It’s is a contraction of it is or it has — the apostrophe marks the missing letter.
Why do writers commonly confuse itself with its self?
Because English reflexive pronouns like myself and herself look like two joined words. Writers naturally assume its self follows the same logic — but it doesn’t.
Is itself used differently in American and British English?
No. Both American and British English treat itself identically — always one word, always the standard reflexive and emphatic pronoun for non-human subjects.
