You are halfway through an email to your boss when you pause. Should it be of course or ofcourse? You type both versions, delete them, and stare at the screen.
This tiny hesitation costs you time and confidence, and if you guess wrong, it can make your writing look careless. The Of Course or Ofcourse question trips up more writers than you might think, but it has one simple, permanent fix
Quick Answer
“Of course” is the only correct spelling. It is always written as two separate words in English. “Ofcourse” is not a recognized word in any major dictionary or style guide, and using it in formal or professional writing is considered a spelling error.
What Does “Of Course” Mean?
“Of course” is a common English phrase used to express agreement, confirmation, or something that is obviously true. It works as an adverb phrase and often appears at the start, middle, or end of a sentence.
Examples:
- “Of course, I will help you move this weekend.”
- “She was, of course, the first to arrive.”
- “Can you send the report today? Of course.”
The phrase softens a statement or adds emphasis, depending on where it sits in the sentence.
Is “Ofcourse” a Real Word?
No. “Ofcourse” does not appear in Merriam-Webster, Oxford, or Cambridge dictionaries. It is a spelling error that happens when two separate words get merged into one, similar to writing “alot” instead of “a lot.”
Search engines and grammar checkers flag it because it has no formal grammatical standing. There is no context, formal or informal, where “ofcourse” is the accepted spelling.
Why This Mix-Up Happens So Often
This error is common for a few clear reasons:
- Fast typing on mobile keyboards merges words unintentionally.
- Some regional or informal speech patterns blur word boundaries.
- Similar-sounding compound words like “however” or “moreover” trick writers into assuming “ofcourse” follows the same pattern.
- Autocorrect does not always catch it, especially on older or basic keyboard apps.
Understanding why the Of Course or Ofcourse mix-up happens helps writers catch the mistake before it becomes a habit.
The Correct Spelling Rule
The rule is simple and has no exceptions: “of course” is always two words.
Unlike compound words that merged over time through common usage (like “cannot” or “however”), “of course” never went through that shift. Every major English dictionary and style authority confirms this two-word structure.
Grammar Rules for Using “Of Course” Correctly
Follow these three rules to use the phrase accurately in any type of writing.
Placement in a Sentence
“Of course” can open a sentence, sit in the middle, or close it. Each position changes the tone slightly.
- Opening: “Of course, you can borrow my laptop.”
- Middle: “I will, of course, review the contract first.”
- Closing: “Need a ride? Of course.”
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Comma Usage
When “of course” interrupts a sentence, commas set it apart on both sides. When it opens or closes a sentence, a single comma usually separates it from the rest of the sentence.
- Correct: “Of course, the meeting starts at nine.”
- Correct: “The results, of course, were expected.”
- Incorrect: “Of course the meeting starts at nine” (missing comma changes the pacing and clarity).
Formal vs Informal Tone
In formal writing, “of course” should be used sparingly. Overuse can sound dismissive or overly casual, even though the spelling stays the same in every context.
British vs American English: Any Difference?
There is no spelling difference between British and American English for this phrase. Both dialects use “of course” as two words. The only variation is stylistic, since British writing sometimes favors slightly more formal alternatives like “naturally” or “certainly” in professional documents, while American writing uses “of course” more freely across both casual and business tones.
Style Guide Standards: APA, MLA, and Chicago
Major style guides do not list special formatting rules for “of course” beyond standard comma usage. However, each guide offers general tone guidance that affects how often the phrase should appear:
| Style Guide | Spelling Standard | Tone Guidance |
| APA | Two words, standard comma rules | Discourages overuse in academic writing |
| MLA | Two words, standard comma rules | Acceptable in essays with moderate use |
| Chicago Manual of Style | Two words, standard comma rules | Recommends variety over repetition |
Why “Of Course” Can’t Become a Compound Noun
Some English phrases merge into compound nouns over decades of use, like “backup” or “checkout.” “Of course” has not followed this pattern because it functions as a fixed adverbial phrase, not a noun. Its grammatical role keeps the words separate, and no dictionary has ever recorded a merged version as standard.
Domain-Specific Usage: HR, Medical, and Business Writing
- HR documents: “Of course” should be used carefully in policy writing since it can sound conversational. Formal HR language often replaces it with “as expected” or “naturally.”
- Medical writing: Clinical documentation avoids “of course” almost entirely, favoring precise, neutral phrasing to prevent ambiguity.
- Business writing: “Of course” is common in client emails and customer service replies because it signals warmth and quick agreement, but it should not appear more than once or twice per document.
Common Mistakes and How to Fix Them
- Writing “ofcourse” as one word. Fix: Always separate it into two words, no exceptions.
- Skipping commas around the phrase. Fix: Add commas when the phrase interrupts a sentence or sits at the start or end.
- Trusting autocorrect completely. Fix: Manually check the phrase, especially in professional documents, since not all spellcheckers catch this error.
- Overusing the phrase in formal writing. Fix: Reserve it for moments that genuinely need emphasis or confirmation.
Quick Recap
- “Of course” is always two words. “Ofcourse” is not a recognized spelling.
- Use commas around the phrase when it interrupts a sentence.
- British and American English follow the same spelling rule.
- Style guides recommend using the phrase sparingly in formal writing.
- HR, medical, and business writing each treat the phrase differently based on tone and precision needs.
The next time you type this phrase, remember there is only one correct version. Keep it as two words, place your commas carefully, and match the tone to your audience.
Conclusion
The choice between “of course” and “ofcourse” really isn’t a close call. Only one spelling exists in real English usage, and every major dictionary and style guide agrees on it.
Keep it simple: two words, no hyphen, same spelling in American and British English. Get the commas right based on where the phrase sits in your sentence, and you’re set. Next time you type this phrase, you won’t need to pause. You’ll already know it’s “of course,” every single time.
Arthur Whitmore is a passionate grammar enthusiast and language writer at Hexobrust.com. He creates clear, helpful content on grammar, spelling, and everyday English to make learning simple and enjoyable.
