Posible or Possible: Correct Spelling in US English

If you are unsure whether to write posible or possible, the correct English spelling is possible.

The extra s matters. In standard English, possible is the accepted spelling. Posible is normally a spelling mistake when you are writing in English.

The word possible is common in American English. It describes something that can happen, can be done, can exist, or may be true.

For example:

Is it possible to finish this today?

The simple rule is easy to remember:

Possible = correct English spelling
Posible = incorrect English spelling

Quick Answer

Possible is the correct spelling in English.

Posible is not the standard English spelling of this word.

Context	Best Choice	Why
American English	possible	Standard English spelling
British English	possible	Same spelling
School writing	possible	Correct standard form
Business writing	possible	Clear and accepted
Everyday English	possible	Normal spelling
Spanish writing	posible	Different language spelling

So, if you are writing an English sentence, use possible with two s letters.

Why People Confuse Them

The two forms look almost the same:

• posible
• possible

Only one letter is missing, so the mistake can be easy to overlook.

Fast typing is one common reason. When people type quickly, a repeated letter can disappear.

Sound can also cause confusion. In normal speech, you do not hear two separate s sounds. This means pronunciation does not always remind you that the written word needs two s letters.

There is another useful point. posible is a real spelling in Spanish. That can cause confusion for people who know or use more than one language.

But the language matters.

In English:

possible

In Spanish:

posible

When your sentence is in English, choose possible.

Key Differences At A Glance

There is no normal meaning difference between possible and posible in English because posible is not a standard English spelling of the word.

Feature	Possible	Posible
Standard English spelling	Yes	No
Used in American English	Yes	No
Standard adjective	Yes	No
Has two s letters	Yes	No
Meaning in English	Can happen, exist, or be done	Usually intended as “possible”
Correct for English writing	Yes	No

The key point is simple: this is a spelling correction, not a difference in English meaning.

Are They the Same Word?

In an English sentence, posible is normally an incorrect spelling of possible.

The correct word, possible, is an adjective. It can describe something that can happen, can be done, can exist, or may be true.

For example:

A solution is possible.

This means a solution can exist or can be found.

You can also use possible when something is uncertain:

It is possible that the store will close early.

This means the store may close early, but the sentence does not say that it definitely will.

One important point is that possible does not mean “certain.”

Something can be possible without being likely.

For example:

It is possible that it will snow tomorrow.

This says snow may happen. It does not say snow is expected to happen.

US vs UK Preference

There is no normal American-versus-British spelling difference here.

American English uses:

possible

British English also uses:

possible

This is different from words that have established regional forms, such as color/colour or center/centre.

For possible, changing from one English variety to another does not require changing the spelling.

So if your website, school assignment, email, report, or business document is written for readers in the United States, use possible.

The same spelling also works for British English.

Which Spelling Should You Use?

Use possible whenever you are writing in English.

This applies to:

• Emails
• School assignments
• Resumes
• Business documents
• Websites
• Blog posts
• Reports
• Social media posts
• Text messages
• Everyday writing

Examples:

Please reply as soon as possible.

Is it possible to change the appointment?

We should consider every possible option.

A delay is possible because of the weather.

Do not change possible to posible simply because the word sounds like it could contain one s.

Remember:

P-O-S-S-I-B-L-E

Two s letters.

When One Spelling Looks Wrong

If you see posible inside an English sentence, it will usually look wrong because the standard English spelling is possible.

For example:

❌ It is posible to finish the work today.

Correct it to:

✅ It is possible to finish the work today.

Another example:

❌ Is it posible to change the meeting time?

Correct:

✅ Is it possible to change the meeting time?

The mistake does not usually change what the writer means. A reader can often understand it. However, correcting the spelling makes the writing standard and polished.

There is one important language exception. Posible can be correct when you are intentionally writing Spanish. It should not be treated as the standard English spelling.

Common Mistakes (and Quick Fixes)

Mistake 1: Dropping the second s

❌ posible
✅ possible

Quick fix: Remember that possible has ss in the middle.

Mistake 2: Using the wrong vowel

❌ possable
✅ possible

The correct ending is -ible, not -able.

Mistake 3: Writing “imposible”

The correct English form is:

❌ imposible
✅ impossible

The double s pattern remains important in the related word impossible.

Mistake 4: Confusing possible with probable

These words are related, but they are not exact matches.

Possible means something can happen or may be true.

Probable means something is likely to happen or be true.

For example:

It is possible that the package will arrive today.

This does not necessarily mean the package is likely to arrive today.

Mistake 5: Forgetting the double s

A useful spelling check is:

possible → poss + ible

When you write the word, look for the two s letters.

Everyday Examples

Here are natural examples of possible in American English:

1. Is it possible to move the appointment to Friday?
2. Please send the information as soon as possible.
3. We need to find the best possible solution.
4. It is possible that the meeting will start late.
5. A small delay is possible during the update.
6. She asked whether it was possible to return the item.
7. The team considered every possible option.
8. Is it possible to finish the project this week?
9. Anything is possible with enough preparation.
10. Please arrive as early as possible.

Incorrect:

❌ Is it posible to finish today?

Correct:

✅ Is it possible to finish today?

Incorrect:

❌ We need a posible solution.

Correct:

✅ We need a possible solution.

The correct spelling stays possible in both casual and formal English.

Dictionary-Style Word Details

Verb

Possible is not normally used as a verb.

Posible is also not a standard English verb.

The related action is usually expressed with another verb, depending on the sentence.

For example:

We can finish the work today.

rather than trying to use possible as a verb.

Noun

Possible is not normally used as the main noun form in standard everyday English.

The common noun form is possibility.

Example:

There is a possibility that the flight will be delayed.

Posible does not have a standard English noun role.

Synonyms

For possible, useful alternatives depend on the sentence.

Closest plain alternatives include:

• feasible
• achievable
• doable
• workable
• conceivable

These words are not perfect replacements in every sentence.

For example, feasible often focuses on whether something can realistically be done, while possible has a broader use.

Posible does not need a separate synonym list because it is normally a misspelling when used in an English sentence.

Example Sentences

Possible:

Is it possible to book a room for tonight?

We need every possible detail before making a decision.

It is possible that the package will arrive tomorrow.

Please respond as soon as possible.

Posible:

❌ Is it posible to book a room?

The corrected sentence is:

✅ Is it possible to book a room?

Word History

The English word possible has a long history and is connected to the Latin word possibilis, referring to something that can be done or can happen.

The modern English spelling is possible, with two s letters.

The similar-looking Spanish word posible helps explain why the one-s form may look familiar to some readers. But languages can use different spelling patterns for related words.

For English writing, the standard form is possible.

Phrases Containing

Possible appears in many common English phrases.

Examples include:

• as soon as possible
• as quickly as possible
• if possible
• as much as possible
• the best possible
• every possible
• a possible solution
• a possible reason
• a possible cause
• a possible answer

Examples:

Please call me as soon as possible.

We should choose the best possible option.

If possible, arrive before 9 a.m.

These phrases all use possible with two s letters.

FAQs

Conclusion

When choosing between posible or possible, use possible in standard English.

The correct spelling is:

possible

It contains two s letters:

P-O-S-S-I-B-L-E

Posible is normally a spelling mistake when the intended language is English. It may be correct in Spanish, but that does not make it an accepted English spelling.

For American English, the rule is simple:

Use possible.

Whether you are writing an email, school assignment, business document, website, or everyday message, possible is