Quick Answer
The only grammatically correct phrase is “for all intents and purposes”. It means “in every practical sense” or “virtually.”
For all intents and purposes ✓
For all intensive purposes ✗
Note: “Intensive purposes” is a common mishearing known as an eggcorn.
Table of Contents
If you’ve ever written “for all intensive purposes,” you’re definitely not the only one. It’s a very common mistake, but in professional or formal writing, getting the phrase right is important for staying clear and precise.
The Correct Phrase: For All Intents and Purposes
The standard idiom is “for all intents and purposes.” This phrase essentially means “practically speaking” or “in effect.” When you use it, you are saying that even if something isn’t officially or technically true, it is true enough to be treated as such in reality.
Think of it as a legalistic way of saying “basically” or “virtually.”
Example: “The car is old and rusty, but for all intents and purposes, it still runs fine.”
(Meaning: In every practical way that matters, the car works.)
Why “Intensive Purposes” is Incorrect
The version “for all intensive purposes” is what linguists call an eggcorn. An eggcorn is a word or phrase that sounds like the correct one and seems to make a little bit of sense, but is actually wrong. Source-1✅
People often think, “Well, my purposes are intense, so maybe that makes sense?” But in this idiom, the word intensive (meaning highly concentrated or forceful) doesn’t fit the context. The phrase isn’t about the intensity of your purpose; it is about the intention and the result.
Pronunciation and The Confusion
The confusion almost always comes from speech rather than writing. When you say “intents and” quickly, the “s” at the end of “intents” blends with the “and.”
- Intents and sounds very similar to Intensive.
- Both have three syllables.
- The stress pattern is nearly identical in casual conversation.
Because we often hear phrases before we see them written down, our brains try to fill in the gaps with words we already know. Since “intensive” is a common adjective, our brain swaps it in for the slightly more formal “intents and.”
Word Origin: A Legal Legacy
This phrase didn’t start as casual slang. It has deep roots in English law dating back to the 1500s. Originally, legal documents used the phrase “to all intents, constructions, and purposes” to cover every possible interpretation of a law or contract.
The earliest known record of the modern phrasing appears in an Act of Parliament under King Henry VIII in 1546. Back then, lawmakers wanted to be absolutely sure there were no loopholes. Source-2✅
Over centuries, the “constructions” part was dropped, leaving us with the “for all intents and purposes” we use today.
Comparison Table
Here is a quick breakdown to help you remember the difference.
| Feature | For All Intents and Purposes | For All Intensive Purposes |
|---|---|---|
| Status | Correct | Incorrect |
| Meaning | In every practical sense; virtually. | Nonsense phrase (Eggcorn). |
| Logic | Refers to the intent (plan) and purpose (goal). | Implies “purposes that are intense,” which is rarely meant. |
| Usage | Formal writing, legal docs, daily speech. | Should generally be avoided in writing. |
Frequently Asked Questions (FAQ)
Is “for all intensive purposes” ever correct?
No, it is widely considered an error in standard English. While people might understand what you mean because the phrases sound similar, writing “intensive purposes” makes it look like you misunderstood the idiom. It is best to stick to the standard form.
What does “for all intents and purposes” actually mean?
It means that effectively or practically, something is the case, even if it isn’t officially so. For example, if a store is closing in 5 minutes and has locked the doors, “for all intents and purposes,” it is already closed.
Can I just say “for all intents”?
You can, but it is very rare and might sound incomplete. The full idiom “for all intents and purposes” provides a rhythm and weight that the shortened version lacks. In modern English, you almost always see the full phrase.
How can I remember the correct spelling?
Remember that the phrase is about your intentions. Think of the word “Intend.” You have an intent and a purpose. Just repeat “Intent and Purpose” to yourself to break the habit of saying “intensive.”
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