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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 through
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "good through" is correct and usable in written English.
It is typically used to indicate the expiration date of an offer, coupon, or promotion, meaning it is valid until that date. Example: "This coupon is good through December 31st, so make sure to use it before then."
✓ Grammatically correct
News & Media
Travel
Science
Alternative expressions(20)
valid until
effective until
expires on
in effect until
available until
lasts until
has been obscured until
better through
applied until
is available until
has been forbidden until
valid till
correct up to
remains in force until
going through
is appropriate until
is in force until
has been bailed until
is funny until
improved through
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
When I'm asked how I'm doing now, I say "Real good!" through clenched teeth.
News & Media
It's been good through all tides".
News & Media
The offer is good through March 31.
News & Media
The offer is good through October.
News & Media
The rate is good through Dec. 23.
News & Media
The program is good through April 15.
News & Media
The deal is good through Feb. 28.
News & Media
The prices are good through March 31.
News & Media
Montreal rates are good through April 30 , 2001
News & Media
(Hours good through Labor Day; after that, call).
News & Media
It is good through the fall at most places.
News & Media
Expert writing Tips
Best practice
When stating the expiration date of a coupon or offer, use "good through" followed by a specific date to avoid ambiguity. For example: "This discount is "good through" December 31, 2025".
Common error
Avoid using "good through" when you actually mean the offer is valid after a certain date. "Good through" specifies an end date, not a starting date.
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "good through" functions as a prepositional phrase that modifies a noun, adjective, or another phrase. It typically indicates a timeframe or duration for the validity of something. Ludwig AI confirms its correct and usable status in English.
Frequent in
News & Media
48%
Travel
31%
Science
8%
Less common in
Academia
5%
Formal & Business
5%
Encyclopedias
3%
Ludwig's WRAP-UP
The phrase "good through" is a common and grammatically correct way to indicate the expiration date or period of validity for something. As shown by Ludwig, it's frequently used in news and travel contexts to specify the duration of offers or promotions. It's important to use it correctly to avoid ambiguity, specifying the end date of validity. If you're looking for alternatives, phrases like "valid until" or "expires on" can serve as effective substitutes.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
valid until
Indicates the final date something is usable or applicable, similar to "good through".
effective until
Specifies the date until which something is in effect or operational, resembling "good through".
expires on
Highlights the date when something becomes invalid, similar to marking the end of the "good through" period.
in effect until
Denotes the period during which something is active or applicable, much like "good through".
remains valid through
Emphasizes that something stays valid up to a specific date, similar to "good through".
operable until
Implies something is functional up to a certain date, similar to the concept of "good through".
usable until
Indicates the last day something can be used, sharing the same sense of limitation as "good through".
available until
States the period during which something is accessible, similar to "good through" for offers or promotions.
lasts until
Specifies the duration of something's validity, similar to the end date in "good through".
in force until
Suggests something is legally binding until a certain date, which is comparable to the validity described by "good through".
FAQs
What does "good through" mean?
"Good through" indicates the last day that something is valid or effective. After that date, it is no longer usable.
What is an alternative to saying "good through"?
You can use alternatives such as "valid until", "effective until", or "expires on".
How do I use "good through" in a sentence?
Use "good through" to specify the expiration date of a promotion, coupon, or agreement. For example, "This offer is "good through" the end of the year".
Is it correct to say "good thru" instead of "good through"?
While "good thru" is a common abbreviation, "good through" is the more formal and grammatically correct option, especially in professional writing.
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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
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested