Apologise vs. Apologize: What's the Difference?
Learn the regional spelling difference between apologise and apologize, how related forms work, and how to keep professional writing consistent.
Apologize is the standard American spelling. Apologise is the common British spelling, although some British -ize house styles also use apologize. Both mean express regret or say sorry, and neither form is more sincere.
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A customer email begins with “We apologise” and closes with “we apologized.” The message sounds less polished because it changes spelling system midway, so the editor chooses one approved style.
Apologise vs. Apologize at a glance
| Word | Typical role | Meaning | Example |
|---|---|---|---|
| apologise | British spelling variant | to express regret or acknowledge a fault | We apologise for the delay in responding. |
| apologize | American and -ize spelling | the same act of expressing regret | We apologize for the delay in responding. |
How to use apologise
Use apologise in a British -ise editorial style. Its related forms are apologised and apologising. It is common in UK public communication and across several English varieties influenced by British conventions.
We apologise for the delay in responding.
How to use apologize
Use apologize in American English. Some British dictionaries and publishers also prefer -ize spellings, so this form is not exclusively American. Related forms include apologized and apologizing.
We apologize for the delay in responding.
Rules that make the choice easier
Use apologize for US style
American English consistently spells the verb with z.
Check the British house style
Use apologise in an -ise system and apologize when a British publisher specifies -ize.
Keep related forms aligned
Pair apologise with apologised and apologising, or apologize with apologized and apologizing.
Common mistakes to avoid
- Do not call apologise incorrect in British writing.
- Avoid mixing apologise with apologizing in one editorial voice.
- Do not alter a quotation or official slogan merely to match your preference.
Quick practice
1. Which is the standard US spelling?
Answer: apologize
2. Is apologise correct in British English?
Answer: Yes
3. Do the forms differ in meaning?
Answer: No
Frequently asked questions
Is apologise or apologize correct?
Both are correct; apologize is American and apologise is common in British English.
Can British English use apologize?
Yes. Some British -ize house styles use apologize.
Is it apologised or apologized?
Apologised matches -ise style; apologized matches -ize style.
Which spelling should a global company choose?
Choose the form required by its audience or house style and apply it consistently.