Acknowledgement vs. Acknowledgment

What is the Difference Between Acknowledgement and Acknowledgment?

When to Use Acknowledgment

Acknowledgment is a noun. It refers to an indication of recognition or a display of gratitude.

When to Use Acknowledgement

Acknowledgement is another version of the same word. It has the same definitions, but it is more common in locations that use British English.

You should use acknowledgment with readers of American English, and acknowledgement with
readers of British English.

Summary

Is it acknowledgement or acknowledgment? Over time, American English and British English have standardized around different spelling conventions. In this case, Americans usually drop the -e at the end of a word when adding a suffix. The British are likely to retain the same -e.

[Acknowledgment is the American variant of the noun.

Acknowledgement is the British variant.

Since England starts with an E, and acknowledgement has an extra E, you can use the same mnemonic to decide when to use many words that differ according to these spelling conventions.