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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
contributed free
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "contributed free" is not entirely correct in standard written English; it would be better as "contributed for free." You can use it when referring to something that has been given or provided without charge.
Example: "The software was contributed for free by the developers to support the open-source community."
Science
News & Media
Alternative expressions(3)
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
1 human-written examples
Oxford Nanopore have contributed free of charge early-access reagents in support of the data presented in this manuscript.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Technically complying with the corporate money ban, several large corporations contributed free-of-charge goods and services to the account funding the Democratic National Convention.
News & Media
The Cleaver Co., a caterer, is providing its services at a discount; P.S. 122 is donating its space; and the Brooklyn Brewery is contributing free beer.
News & Media
Mr. Brand and other administrators say journal price increases contribute to the rising cost of higher education, adding that universities often pay for the research their professors contribute free to profitable journals.
News & Media
Heterotrophic in-stream processing of DOC may contribute free CO2 to increase DIC and would shift carbonate equilibrium towards HCO3 − (Stumm and Morgan 1981).
Science
In short, a group has to be pretty shitty to be denied the right to contribute free labor to the government.
News & Media
IAA hydrolase contributes free IAA to the auxin pool during germination in Arabidopsis[ 38], while IAA synthetase may catalyze the entire pathway of biosynthesis of the major plant growth hormone [ 39].
Science
Fortunately, it will often be the case, especially in neutral to alkaline sulfidic waters, that the amount of ΣS0 contributed by free and sorbed molecular S8 is negligible.
Science
Braniff scored six points from frees in the first half while London's Martin Finn contributed four frees, before coming off injured.
News & Media
There are limits to how much can be contributed tax-free, but the amount of tax foregone through contributions to 401(k) plans, along with employer plans, when combined still make tax-deferred retirement savings the second largest tax expenditure.
News & Media
Journal publishing's costs are minimal because researchers contribute papers free, to advance their careers.
News & Media
Expert writing Tips
Best practice
When using "contributed free", consider if "contributed for free" or "contributed without charge" might be clearer and more common alternatives. This ensures your writing is both grammatically sound and easily understood.
Common error
Avoid using "contributed free" when "contributed for free" is intended. The preposition 'for' clarifies that the contribution was made without expecting payment or compensation.
Source & Trust
82%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "contributed free" functions as a verb phrase, indicating an action of providing something without cost. As Ludwig AI points out, it is often better to use the preposition 'for' to clarify the meaning as in "contributed for free."
Frequent in
News & Media
50%
Science
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "contributed free" describes an act of providing something without charge. While understandable, it's less common than alternatives like "contributed for free" or "donated free of charge". Ludwig AI indicates that the inclusion of the preposition 'for' often improves clarity. Usage is split between news and scientific contexts, suggesting a neutral but slightly informal register. For formal writing, consider more explicit phrases. Although "contributed free" is grammatically acceptable, the alternatives provide better clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
contributed without charge
Replaces "free" with a more formal synonym, emphasizing the absence of cost.
donated free of charge
Uses the verb "donated" to specify a voluntary contribution, making the meaning more explicit.
provided at no cost
Focuses on the recipient's perspective, highlighting that there is no expense involved.
offered gratis
Employs the Latin term "gratis" for a more sophisticated and concise expression of freeness.
gave complimentary access
Uses "complimentary" to denote something given as a courtesy or favor, adding a layer of politeness.
supplied without payment
Directly states the absence of payment, making the meaning unambiguous.
furnished free of cost
Emphasizes the act of furnishing or providing something, with "free of cost" reinforcing the zero expense.
made available at no charge
Highlights the accessibility of something without any associated fees.
bestowed as a gift
Implies a generous act of giving, shifting the focus to the benefactor's intention.
contributed on a pro bono basis
Uses the legal term "pro bono" to indicate services offered voluntarily and without payment, often in a professional context.
FAQs
How can I rephrase "contributed free" for better clarity?
You can use phrases like "contributed for free", "donated free of charge", or "provided at no cost" to improve clarity and grammatical correctness.
Is "contributed free" grammatically correct?
While understandable, "contributed free" is less common. It's generally more correct to say "contributed for free" or use a more formal phrase like "contributed without charge".
What's the difference between "contributed free" and "contributed for free"?
"Contributed free" lacks the preposition 'for', making it sound slightly less natural in standard English. "Contributed for free" clearly indicates something was given without cost.
What are some formal alternatives to "contributed free"?
Formal alternatives include "donated free of charge", "provided at no cost", or "contributed without charge". These options are suitable for academic or professional contexts.
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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
82%
Authority and reliability
3.8/5
Expert rating
Real-world application tested