When it comes to bidding someone farewell at the end of the day, many people wonder: should you write “good night” or “goodnight”? This common confusion arises because both forms are widely seen online, in messages, and even in books. People search for this keyword to ensure they use the correct spelling in emails, text messages, social media posts, or formal writing.
Understanding the difference is important. Using the wrong form can make writing look careless, especially in professional contexts. At the same time, casual writing often blurs the line, making it tricky to know what is “right.” This article clears up the confusion, explains the origin of the phrase, and gives practical advice on when to use each spelling. Whether you are writing to friends, colleagues, or a global audience, this guide ensures your “good night” wishes are grammatically correct and properly understood.
Goodnight vs Good Morning
The key difference between “goodnight” and “good morning” lies in their purpose and timing. “Good morning” is strictly a greeting, used when you first see or communicate with someone after they wake up. It’s a way to say hello and wish them a positive start to their day. In contrast, “Goodnight” is primarily a farewell or parting phrase, used when someone is leaving for the evening or going to bed. It’s a wish for a restful sleep. While “good morning” is often written as two separate words, “goodnight” is commonly written as one word, especially when used as a parting salutation. Remember: you greet with “good morning” and bid farewell with “goodnight.”
Good Night or Goodnight – Quick Answer
Quick Answer: The correct standard form is “good night” as two words.
- Good night → Used in most contexts as a farewell before sleeping.
- Example: “Good night, see you tomorrow.”
- Goodnight → Often used informally, in poetry, song lyrics, or as a compound noun.
- Example: “She whispered a sweet goodnight.”
In most professional writing and formal communication, “good night” is preferred.
The Origin of Good Night or Goodnight
The phrase “good night” has been used in English for centuries. The Oxford English Dictionary traces its usage back to the 14th century as a polite farewell in the evening.
The spelling difference arises because English sometimes forms compound words over time. Initially, “good night” was two separate words. Later, writers occasionally merged them into “goodnight”, especially in informal texts or creative works. However, dictionaries still list “good night” as the standard form, while “goodnight” is acceptable mainly in literary or casual contexts.
British English vs American English Spelling
Spelling conventions differ slightly between British and American English, but “good night” remains standard in both.
- British English → Prefers two words: good night.
- American English → Also prefers two words: good night, though goodnight is sometimes seen in casual contexts.
| Feature | British English | American English |
|---|---|---|
| Standard Farewell | Good night | Good night |
| Informal / Creative | Goodnight | Goodnight |
| Dictionary Preference | Two words | Two words |
Even though “goodnight” is widely understood, it is better to stick with good night in formal writing anywhere in the world.
Which Spelling Should You Use?
- US audiences → Stick with good night for professional and everyday writing.
- UK & Commonwealth audiences → Use good night in formal contexts.
- Global / International audience → Always prefer good night, unless quoting poetry, songs, or informal messages.
If you are unsure, choosing two words is safe, clear, and widely accepted.
Common Mistakes with Good Night or Goodnight
- Incorrect: “I hope you have a goodnight.”
Correct: “I hope you have a good night.” - Incorrect: “She said goodnight to everyone at the office.” (formal writing)
Correct: “She said good night to everyone at the office.” - Using Goodnight at the beginning of a sentence in formal emails is uncommon. Stick to Good night.
Good Night or Goodnight in Everyday Examples
Emails:
- Correct: “Good night, and I look forward to tomorrow’s meeting.”
News Headlines:
- Correct: “Good night: How to sleep better during winter”
Social Media:
- Informal: “Goodnight, everyone! Sweet dreams 😴”
Formal Writing:
- Correct: “We wish all staff a good night as operations close.”
Good Night or Goodnight – Google Trends & Usage Data
Search data shows that “good night” is more commonly searched than “goodnight”, especially in English-speaking countries like the US, UK, Canada, and Australia.
- US Searches: 85% “good night,” 15% “goodnight”
- UK Searches: 80% “good night,” 20% “goodnight”
The compound form tends to appear in lyrics, poems, and informal posts, while the two-word form dominates professional writing and general queries.
Keyword Variations Comparison
| Variation | Usage Context | Recommended |
|---|---|---|
| Good night | Standard, formal, everyday use | ✅ Yes |
| Goodnight | Informal, creative writing, songs | ⚠️ Limited |
| good-night | Rare, outdated hyphenation | ❌ Avoid |
| g’night | Very casual, texting | ⚠️ Only casual |
FAQs
1. What is correct, goodnight or good night?
Good night is the correct and standard form; goodnight is informal and less common.
2. Is good night different than goodnight?
Yes. Good night is a farewell phrase, while goodnight is often used informally or as a noun.
3. Is “good night” a farewell?
Yes, good night is commonly used as a farewell before sleeping or late in the evening.
4. Does goodnight need a comma?
No. A comma is only needed after it when addressing someone, like “Good night, Sarah.”
5. How do I write “Good night”?
Write it as two words: Good night, especially in formal or professional writing.
6. Why is the Oxford comma so controversial?
Because some see it as unnecessary, while others believe it prevents confusion.
7. Why do Brits not use the Oxford comma?
British style guides usually consider it optional and prefer cleaner punctuation.
8. Why is the Oxford comma being removed?
Some editors remove it to simplify writing and follow modern style guidelines.
9. Why do Americans use the Oxford comma?
American style guides favor it because it improves clarity and avoids ambiguity.
Conclusion
In summary, “good night” is the standard and safest spelling for almost all contexts. The merged form “goodnight” is mainly informal, used in literature, songs, and casual messages. British and American English both prefer good night, making it a universally accepted choice.
When writing professionally, in emails, or addressing a global audience, stick with good night. Reserve goodnight for poetry, songs, or friendly social media messages. Understanding the difference not only improves writing accuracy but also ensures your farewell wishes are clear and polished.
By following these simple guidelines, you can confidently decide which form to use and avoid common mistakes. Whether chatting with friends, posting online, or writing formally, good night is your safe and correct choice.
