If you are unsure whether to write posible or possible, the answer is straightforward: possible is the correct spelling in standard English.
The two forms look almost identical, and the missing second s is easy to overlook. However, posible is not an alternative English spelling of possible.
For US English writing, use possible in emails, school assignments, workplace documents, text messages, and everyday sentences.
Quick Answer
Possible is correct. Posible is normally incorrect in English.
Possible can describe something that can happen, can be done, can exist, or may be true.
- Correct: Is it possible to finish this today?
- Incorrect: Is it posible to finish this today?
The key spelling detail is the double s:
possible = p-o-s-s-i-b-l-e
There is no standard English meaning difference between the two spellings. The issue is simply that possible is the established English form.
Why People Confuse Them
The main confusion comes from pronunciation. In American English, possible is commonly pronounced roughly like PAH-suh-buhl. The two written s letters are not pronounced as two separate sounds, so hearing the word does not make the spelling obvious.
Fast typing can also cause the error. When someone types quickly, it is easy to leave out one letter without noticing.
Another source of confusion is another language. Posible is a valid spelling in Spanish, but that does not make it a standard English spelling.
So, when writing an English sentence, the form to remember is possible.
Key Differences At A Glance
| Context | Best Choice | Why |
|---|---|---|
| Standard English writing | possible | It is the standard English spelling |
| US workplace email | possible | The spelling remains standard in professional writing |
| Text message | possible | Informal writing does not change the spelling |
| School assignment | possible | The standard spelling is expected |
| Something that can happen | possible | It expresses possibility |
| Something that can be done | possible | It describes what can be achieved |
| posible in an ordinary English sentence | possible | posible is normally a spelling error |
Meaning and Usage Difference
There is no ordinary English meaning contrast between posible and possible.
Possible is the standard English word. It can describe something that can happen, be achieved, exist, or be true.
For example:
It is possible to complete the project today.
Here, possible means that completing the project today can be done.
It can also describe something that may happen:
A delay is possible because of heavy traffic.
The word does not guarantee that the delay will happen. It only says that the event can happen.
This distinction matters because possible does not automatically mean highly likely. Something can be possible without being likely.
Tone, Context, and Formality
Possible is neutral and works across virtually all normal levels of English writing.
You can use it in:
- casual conversation
- text messages
- workplace communication
- academic writing
- instructions
- formal documents
The spelling does not change with the level of formality.
Writing posible in a casual text may still be understood, but it is normally seen as a spelling mistake. Informal writing does not turn posible into an accepted English variant.
There is also no standard US-versus-UK spelling difference here. Both varieties use possible.
Pronunciation can vary slightly by accent, but the written form remains the same.
Which One Should You Use?
Choose possible whenever you are writing the English word.
Use it when describing something that:
- can happen
- can be done
- can exist
- may be true
- may be selected or considered
Examples include:
- We need to find a possible solution.
- Is it possible to reschedule the meeting?
- A power outage is possible tonight.
- Please send the information as soon as possible.
- That explanation is possible, but more evidence is needed.
Do not replace possible with posible simply because the shorter spelling looks or sounds natural.
When One Choice Sounds Wrong
This comparison is unusual because the incorrect form may not sound wrong when spoken.
If someone says possible, you hear the same basic sound whether you know the spelling or not. The problem becomes visible when the word is written.
For example:
- Wrong: Please reply as soon as posible.
- Correct: Please reply as soon as possible.
The same applies before a noun:
- Wrong: We considered every posible option.
- Correct: We considered every possible option.
In both cases, the meaning is clear, but the spelling is incorrect.
Remember that possible and probable are also not exact equivalents. Possible means something can happen; probable indicates a stronger expectation that it will happen.
Common Mistakes (and Quick Fixes)
The most common mistake is leaving out the second s.
Wrong: It is posible to change the date.
Right: It is possible to change the date.
Another mistake is misspelling the middle of the word:
Wrong: possable
Right: possible
A simple visual reminder is:
poss + ible = possible
It can also help to remember the related word possibility, which begins with the same poss- spelling.
Do not assume that casual writing allows posible. Texting, social media, and quick notes still use possible when the intended language is English.
Everyday Examples
Here are natural examples of possible in modern US English:
- Is it possible to move our appointment to Friday?
- We should consider every possible outcome.
- It may be possible to repair the laptop today.
- Please arrive as early as possible.
- A late delivery is possible during the holiday season.
- She looked for the best possible solution.
- It is possible that the package was delivered to the wrong address.
- We did everything possible to finish on time.
In each example, possible is the correct English spelling.
The spelling posible should normally be changed to possible.
Dictionary-Style Word Details
Verb
posible: Not commonly used as a verb in standard US English.
possible: Not commonly used as a verb in standard US English. The standard word is primarily an adjective, although it also has a less common noun use.
Noun
posible: Not a standard English noun for this meaning.
possible: Possible can function as a noun in less common contexts, especially when referring to a person or option that might be selected. For example, a group may contain several possibles.
Synonyms
posible: No standard English synonyms apply because it is normally an incorrect spelling.
possible: Depending on context, closest plain alternatives include feasible, achievable, conceivable, or potential. These are not interchangeable in every sentence because their meanings and uses differ.
A useful antonym is impossible.
Example Sentences
posible:
Incorrect in standard English: Is it posible to finish this today?
possible:
Correct: Is it possible to finish this today?
possible:
We are looking for a possible explanation.
Word History
posible: It does not have a separate history as the standard English spelling in this comparison.
possible: The English word comes through French from Latin possibilis, related to the idea of being able or capable. The established English spelling uses two s letters.
For everyday writing, remembering the spelling possible is more useful than memorizing its full history.
Phrases Containing
posible: No standard English phrases use this spelling for the intended meaning.
possible: Common phrases include:
- as soon as possible
- if possible
- whenever possible
- as much as possible
- as far as possible
- the best possible
- the worst possible
- humanly possible
- a possible solution
- a possible reason
In each standard English phrase, use possible with two s letters.
FAQs
Is posible a correct English spelling?
No. In standard English, possible is the correct spelling. Posible is normally a misspelling of possible. If you are writing an English sentence, use the form with two s letters, whether the setting is casual, academic, or professional.
Does posible have a different meaning from possible?
No. There is no standard English meaning that separates posible from possible. Writers who type posible usually intend possible, which means something can happen, can be done, can exist, or may be true.
Is possible an adjective?
Yes. Possible is mainly an adjective in standard English. It can describe something that may happen, can be achieved, or may be true, as in “a possible delay” or “It is possible to finish today.”
Why is possible spelled with two s letters?
Possible has an established English spelling with two s letters. Its history runs through French to Latin, and the English form retained that spelling. For everyday writing, remembering the pattern poss + ible is enough.
Can posible be used in a casual text?
No, not as the standard English spelling. A text message can be informal, but the spelling of possible does not change. Posible may be understood as a typo, yet possible is still the correct choice.
Is possible the same in American and British English?
Yes. Both American and British English use possible with two s letters. The pronunciation can vary slightly by accent, but the spelling does not change. For US English, write possible in every normal context.
Conclusion
When choosing between posible and possible, use possible in standard English.
The difference is not one of meaning. Possible is the established English spelling, while posible is normally a misspelling in an English sentence.
A simple way to remember it is:
possible → poss + ible
Keep the two s letters, whether you are writing a text, email, school assignment, or professional document.
