English spelling can be tricky, especially when words sound similar. Take the words possible, imposible, and impossible. At first glance, you might wonder:
- Are they all correct?
- Do they mean the same thing?
- How do I know which one to use in writing?
Here’s the truth in simple terms:
✅ Possible – correct, means “can happen or be done”
❌ Imposible – incorrect spelling (common mistake, often from Spanish influence)
✅ Impossible – correct, means “cannot happen or be done”
It sounds simple, but small spelling mistakes can easily slip into emails, assignments, or social media posts. Let’s break it down so you never have to guess again.
1. Possible: The Word That Means “Can Happen”
Possible is an adjective describing something that can occur, exist, or be done.
Real-Life Examples:
- “It’s possible to finish the project by Friday.”
- “Anything is possible if you work hard.”
- “Is it possible to meet earlier?”
- “With proper care, recovery is possible.”
It’s one of those words that shows opportunity, potential, or capability. You’ll see it in everyday conversation, business writing, and even motivational quotes.
2. Imposible: The Common Mistake
You may see imposible in writing, especially online or in notes.
Why does it happen?
- Spanish influence – In Spanish, the word is spelled imposible, so bilingual writers sometimes carry over the spelling.
- Fast typing – People drop letters or simplify words.
- Phonetic assumptions – “Impossible” sounds like it should have one “s” in the middle.
Important:
- Imposible is NOT correct in English.
- Avoid it in professional or published content.
3. Impossible: The Correct Negative Form
Impossible is the adjective used to describe something that cannot happen or cannot be done.
Real-Life Examples:
- “It’s impossible to lift that heavy box alone.”
- “Completing the marathon without training is impossible.”
- “He said it was impossible, but she proved him wrong.”
- “The solution seemed impossible, but teamwork made it achievable.”
It’s basically the opposite of possible. When something is beyond ability or practicality, it’s impossible.
Possible vs Imposible vs Impossible: A Side-by-Side Comparison
| Word | Correct? | Meaning | Usage Examples |
|---|---|---|---|
| Possible | ✅ Yes | Can happen, achievable | “It’s possible to learn a new language.” |
| Imposible | ❌ No | None (common misspelling, often Spanish-influenced) | “The task was imposible.” ❌ |
| Impossible | ✅ Yes | Cannot happen, unachievable | “It’s impossible to finish without help.” |
Easy Tips to Remember the Correct Spellings
- Double “s” rule – Both possible and impossible have double “s.” If you drop one, it’s probably wrong.
- Add “im-” for negative – To make the opposite, just add im- to possible → impossible.
- Think of Spanish influence – If you’re bilingual, remember English always uses double “s”.
Memory trick:
“Possible = can do, Impossible = can’t do, Imposible = never English.”
Real-Life Contexts Where Mistakes Happen
1. Emails and Business Writing
Incorrect: “It is imposible to complete the report today.”
Correct: “It is impossible to complete the report today.”
2. School Assignments
Incorrect: “It’s imposible to solve this math problem.”
Correct: “It’s impossible to solve this math problem without a calculator.”
3. Social Media and Blog Posts
Casual writers often type imposible, especially if they are bilingual. While informal readers may understand, it’s still a spelling mistake.
4. Motivational Quotes
Quotes about achieving dreams often use possible or impossible correctly:
- Correct: “Nothing is impossible; everything is possible with effort.”
- Incorrect: “Nothing is imposible; everything is posible.” ❌
Related Words and Patterns
Once you know this pattern, other words are easier to spell:
- Accessible → can be accessed
- Responsible → capable of responsibility
- Inaccessible → cannot be accessed
- Unreachable → impossible to reach
Notice the consistent double “s”. English borrowed many of these from Latin.
Why Spelling Matters
Even small mistakes like imposible vs impossible affect:
- Professional credibility
- Clarity of communication
- Reader trust
- Overall impression of your writing
Correct spelling isn’t just pedantic—it signals attention to detail.
Final Thoughts
English spelling can be confusing, but the rules are simple once you understand them:
- Possible = correct, something can happen
- Impossible = correct, something cannot happen
- Imposible = incorrect, common mistake
By remembering the double “s” rule and the negative prefix im-, you can avoid this mistake entirely. Every time you write possible or impossible, your writing becomes clearer, more professional, and more confident.