The Quick Answer
The correctness depends entirely on where you are writing.
🇺🇸 American English
✔ Practice
Used for both Noun & Verb.
🇬🇧 British English
✔ Practice (Noun)
✔ Practise (Verb)
Spelling changes based on usage.
Few things in the English language cause as much hesitation as the letter C versus the letter S. You are typing an email or an essay, and suddenly the red squiggly line appears under a word you thought you knew. Is it a spelling mistake, or is your spellchecker just set to the wrong region? When it comes to practice and practise, context is everything. These two words sound exactly the same when spoken aloud, a phenomenon known as homophones, but they function quite differently on paper depending on which side of the Atlantic Ocean you are standing on.
Understanding the difference is not just about memorizing a dictionary definition; it is about knowing your audience. Are you writing for a New York business or a London university? Let us break down the rules so you never have to second-guess yourself again.
American English: The Simple Rule
If you are writing for an American audience, you can relax. Americans have simplified the rule completely.
In the United States, practice is the only spelling you need to worry about. It serves double duty. Whether you are talking about a doctor’s medical business (a noun) or the act of playing the piano to get better (a verb), the spelling remains practice with a C.
As a Verb (US)
“I need to practice my Spanish before the trip.”
Here, it is an action.
British English: The Noun vs. Verb Distinction
In the UK, as well as in Australia, Canada (mostly), and other Commonwealth countries, the language holds onto a distinction that American English dropped. Here, the spelling changes based on the grammatical function of the word.
The Golden Rule for UK English
- Practice (with a C) is always a NOUN.
- Practise (with an S) is always a VERB.
Think of it like this: A doctor has a practice (thing), but she must practise (action) medicine to maintain it.
Struggling to remember which is which? Use the words Ice and Advise as your guide.
ICE (Noun): Ends in CE. Just like Practice.
ADVISE (Verb): Ends in SE. Just like Practise.
If you can swap the word with “preparation” (noun), use C. If you can swap it with “prepare” (verb), use S.
Examples in Action
Seeing these words in full sentences is usually the best way to solidify the concept. Notice how the meaning shifts from an object or idea to an active process.
| Sentence | Part of Speech | Correct Region |
|---|---|---|
| Please practise your scales every day. | Verb (Action) | UK / Australia |
| Please practice your scales every day. | Verb (Action) | US only |
| The dental practice is closed today. | Noun (Thing) | US & UK (Both) |
| Practice makes perfect. | Noun (Concept) | US & UK (Both) |
Common Phrases and Traps
There are certain idioms where the spelling is fixed because the grammar is fixed. The most famous one is “Practice makes perfect.”
Note: In the phrase “Practice makes perfect,” the word is functioning as a noun (the concept of repetition). Therefore, it is spelled Practice in both American and British English. You would never write “Practise makes perfect.”
Another common usage is in professional titles. We refer to a “General Practice” (GP) in medicine. Since this refers to the office or the business entity, strictly speaking, it is a noun. Thus, Practice is the correct spelling globally.
Quick Check: Which One Do I Use?
Before you hit publish on your next document, run through this simple mental checklist. It filters out 99% of errors regarding this word pair.
Use “Practice” (CE) if…
- You are writing in American English (always).
- You are writing in British English and using it as a Noun.
- You can replace the word with “Piano” (a thing) and the sentence structure still vaguely works.
Use “Practise” (SE) if…
- You are writing in British/Australian English.
- You are using the word as a Verb (doing something).
- You can replace the word with “Perform” or “Prepare” and it makes sense.
Language evolves, but these spelling conventions have remained quite stubborn. While American spellcheckers might try to “correct” your British spelling of practise, knowing the distinction allows you to ignore that red line with confidence when you know you are right.
