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
is mostly free
Grammar usage guide and real-world examplesUSAGE SUMMARY
"is mostly free" is a grammatically correct and commonly used phrase in written English.
It can be used in a variety of contexts to describe something that is not completely free, but mostly free. One example could be: "The internet has revolutionized the way we access information, making it mostly free for everyone to use." In this sentence, "mostly free" means that there may be small fees or restrictions in certain cases, but in general, the internet is free for people to access information.
✓ Grammatically correct
News & Media
Science
Formal & Business
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
36 human-written examples
For all its visual power, Aqua is mostly free of conceit.
News & Media
The lower bowl is mostly free of advertisements and other visual distractions, with a few exceptions.
News & Media
The ground is mostly free of environmental concerns but lacks utilities or infrastructure.
News & Media
On an Internet that is mostly free, after all, personal information is a chief currency.
News & Media
His sort might really feel emboldened in a blogger-infested culture that is mostly free of editors and ethical norms.
News & Media
Information leaks into the film via the radio and a few flashbacks, but "Wrecked" is mostly free of dialogue — and, unfortunately, suspense.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
23 human-written examples
Education and health care are mostly free in Iceland.
News & Media
Windows are mostly free of iron bars, lawns are clipped and there is little graffiti.
News & Media
Americans are mostly free to pursue happiness however they choose with little interference from the state.
News & Media
Food was mostly free: bread from a bakery Dumpster and vegetables from the supermarket's Dumpster.
News & Media
Mornings and early afternoons were mostly free for band members to read, exercise, stroll around.
News & Media
Expert writing Tips
Best practice
When describing services or products, use "is mostly free" to honestly communicate that while access is generally free, certain features or usage levels might incur costs. This builds trust with your audience by setting clear expectations.
Common error
Avoid using "is mostly free" when there are significant hidden costs or limitations. Instead, be transparent about any conditions or fees to maintain credibility.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is mostly free" functions as a descriptive adjective phrase. It modifies a noun, indicating that the noun is available without cost in most situations, but not necessarily entirely. Ludwig AI confirms this usage with numerous real-world examples.
Frequent in
News & Media
76%
Science
14%
Formal & Business
4%
Less common in
Wiki
6%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "is mostly free" is a versatile adjective phrase used to describe something that is generally free, but may have certain costs or limitations. Ludwig AI analysis confirms that this phrase is grammatically sound and frequently used, primarily in news and media, and scientific contexts. When using this phrase, it's best to be upfront about any potential costs to maintain transparency and credibility.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is for the most part free
Rephrases "mostly free" as "for the most part free", which is more verbose but emphasizes the majority aspect of being free.
is by and large free
Substitutes "mostly free" with "by and large free", making it an idiomatic expression conveys overall freeness.
is almost entirely free
Changes "mostly free" to "almost entirely free", emphasizing the completeness of freeness.
is nearly free
Changes "mostly free" to "nearly free", suggesting a very close state to being completely free.
is virtually free
Substitutes "mostly free" with "virtually free", indicating it's near to free, with the word virtually adding a stronger implication of being free.
is largely without charge
Replaces "mostly free" with "largely without charge", emphasizing the absence of fees but sounds more formal.
is primarily free
Replaces "mostly free" with "primarily free", focusing on the primary aspect of being free, but gives a lower degree of freeness.
is substantially free
Substitutes "mostly free" with "substantially free", meaning largely but not wholly free.
is predominantly costless
Substitutes "mostly free" with "predominantly costless", highlighting the lack of expense, and the word "predominantly" is more emphasis.
is essentially gratis
Replaces "mostly free" with "essentially gratis", suggesting that something is basically free, 'gratis' is a more formal word.
FAQs
What does "is mostly free" mean?
The phrase "is mostly free" indicates that something is available without cost in most circumstances, but there may be some limitations, exceptions, or premium features that require payment.
How can I use "is mostly free" in a sentence?
You can use "is mostly free" to describe services, software, or events where the core functionality is free, but additional features are paid. For example, "The basic version of the software "is mostly free", but you'll need a subscription for advanced tools."
What are some alternatives to saying "is mostly free"?
Alternatives to "is mostly free" include phrases like "is largely free", "is virtually free", or "is almost entirely free", depending on the degree of freeness you want to convey.
Is there a difference between "is mostly free" and "is completely free"?
Yes, "is mostly free" implies some costs or restrictions may apply, while "is completely free" suggests no charges whatsoever. Using "is mostly free" sets more realistic expectations than claiming something "is completely free" when it isn't.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested