Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
good day
Grammar usage guide and real-world examplesUSAGE SUMMARY
"good day" is correct and usable in written English.
You can use it as a polite greeting or farewell at any time, either in letters or emails, or when speaking on the phone. For example: "Good day, how can I help you?".
✓ Grammatically correct
News & Media
Academia
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Good Day LA Donny Most ("Happy Days").
News & Media
"It's a good day.
News & Media
Good day, Alice.
News & Media
Good day sir".
News & Media
Good day book people.
News & Media
"Good day" is useless.
News & Media
On a good day.
News & Media
"Good day," she said.
News & Media
That's a good day".
News & Media
Good day: Nick Clegg.
News & Media
Have a good day enjoy!
Academia
Expert writing Tips
Best practice
Use "good day" as a versatile greeting or farewell in both formal and informal contexts to convey politeness and respect.
Common error
Avoid using "good day" in very casual settings where it might sound overly formal or stilted. Opt for phrases like "have a good one" or "see you later" in those situations.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "good day" primarily functions as an interjection used for greeting or bidding farewell. Ludwig AI confirms its correctness and usability in written English. Examples include "Good day, Alice" and "Have a good day enjoy!".
Frequent in
News & Media
70%
Academia
15%
Formal & Business
10%
Less common in
Science
2%
Encyclopedias
1%
Wiki
2%
Ludwig's WRAP-UP
In summary, "good day" is a versatile phrase used for both greeting and farewell, predominantly found in News & Media and Academia. Ludwig AI validates its grammatical correctness and suggests its use in formal contexts. While generally neutral, its formality should be considered in very casual settings. Alternatives like "have a nice day" or "farewell" offer variations in tone and register. Proper usage ensures effective communication across diverse scenarios.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
have a nice day
Similar in meaning and usage but uses "nice" instead of "good", offering a slight variation in tone.
have a good one
Replaces "day" with "one", offering a more casual and concise alternative.
take care
An informal way to say goodbye, implying a wish for the other person's well-being.
bye for now
An informal farewell, suggesting a temporary parting.
farewell
A more formal way of saying goodbye, suitable for more serious or respectful contexts.
best wishes
A polite way to end a conversation or letter, expressing positive sentiments.
until next time
Indicates an expectation of future interaction, suitable for ending recurring meetings or conversations.
good morning
Specifically used as a greeting in the morning, differing in the time of day it applies to.
good afternoon
A greeting used specifically in the afternoon, indicating a different time of day.
good evening
Used as a greeting in the evening, marking a specific time of day for the greeting.
FAQs
How can I use "good day" in a sentence?
"Good day" can be used as a greeting, such as "Good day, sir" or as a farewell, like "I bid you a good day".
What can I say instead of "good day"?
You can use alternatives like "have a nice day", "farewell", or "have a good one" depending on the context.
When is it appropriate to use "good day"?
"Good day" is suitable in both formal and semi-formal situations as a polite greeting or farewell. It can also be used in business correspondence.
Is "good day" too formal for casual conversation?
While "good day" is generally polite, it might sound overly formal in very casual settings. Consider using more relaxed alternatives like "have a good one" or "take care".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested