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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
had failed to use
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "had failed to use" is correct and usable in written English.
It can be used to indicate that someone did not utilize something in the past, often in a context where the failure to use it had consequences. Example: "The team had failed to use the new software effectively, resulting in missed deadlines."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
29 human-written examples
The complainant said her attackers had failed to use condoms.
News & Media
Officials also admitted they had failed to use the Internet to research the bishop's views.
News & Media
The judge also said the state had failed to use its authority to collect taxes from Internet retailers.
News & Media
He suggested that the F.B.I. and the Justice Department already had ample investigative power under the surveillance law, and that they had failed to use it properly.
News & Media
The group had failed to use hacked third-party proxy servers "several times", Comey said, allowing the FBI to track their locations.
News & Media
England had failed to use up 13 balls of their allotted 50 overs but their total was better than they could have anticipated after their shocking start.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
29 human-written examples
But after two games, the Power has failed to use its quickness properly.
News & Media
I am angry that Obama and the Democrats have failed to use the power we gave them to act boldly.
News & Media
He has failed to use the election campaign to spell out the need for vigorous economic reform.
News & Media
The big worry is that Russia has failed to use the breather it gained from high oil prices and devaluation.
News & Media
Ms Megawati has failed to use her five years in opposition to re-establish herself as a potent political force after Mr Yudhoyono soundly beat her in 2004.
News & Media
Expert writing Tips
Best practice
When using "had failed to use", ensure the context clearly indicates what was not used and the consequences or implications of this failure.
Common error
Avoid ambiguity by specifying what "had failed to use". Vague phrasing can confuse the reader about what was not utilized.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "had failed to use" functions as a verb phrase indicating a past action of not utilizing something. According to Ludwig, this phrase is grammatically correct and usable in written English, suggesting a lack of utilization that often carries consequences. Examples show its deployment in various contexts, as displayed by Ludwig's AI response.
Frequent in
News & Media
54%
Science
21%
Wiki
9%
Less common in
Encyclopedias
6%
Formal & Business
4%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "had failed to use" is a grammatically correct and relatively common way to express a past failure to utilize something. As Ludwig AI states, this usage often implies consequences. Predominantly found in news and media, scientific, and encyclopedic contexts, its neutral register allows for broad applicability. To enhance clarity, specify the object not utilized. Alternatives such as "did not utilize" or "neglected to employ" can provide nuanced variations. With a high expert rating and demonstrated consistency across authoritative sources, using "had failed to use" effectively conveys a missed opportunity or lack of action in the past.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
did not utilize
Replaces "failed to use" with a more formal synonym for "use".
neglected to employ
Substitutes "failed" with "neglected" and "use" with "employ", suggesting a careless oversight.
omitted to apply
Replaces "failed" with "omitted" and "use" with "apply", indicating a deliberate, though perhaps unintentional, act of not using something.
had not made use of
Emphasizes the absence of any attempt to use something.
passed up the opportunity to use
Highlights that there was a chance to use something that was missed.
missed the chance to utilize
Similar to the previous alternative but uses a different verb.
did not take advantage of
Focuses on the failure to capitalize on an available resource or opportunity.
left unused
Conveys the idea that something was available but not used, implying potential waste or negligence.
did not leverage
Implies a failure to strategically use something to achieve a desired outcome.
overlooked the application of
Suggests a lack of awareness or recognition of the potential use of something.
FAQs
How can I rephrase "had failed to use" to sound more formal?
You can substitute it with phrases like "did not utilize" or "omitted to apply" depending on the specific nuance you wish to convey.
What does it mean when someone "had failed to use" something?
It signifies that someone did not utilize or take advantage of a resource, opportunity, or tool that was available to them at some point in the past. The reasons and consequences of this failure can vary based on context.
Is there a difference between "had failed to use" and "did not use"?
"Had failed to use" typically implies a missed opportunity or a negative consequence resulting from the lack of use. "Did not use" is more neutral and simply states that something wasn't used without necessarily implying a failure or missed opportunity.
What are some synonyms for "had failed to use"?
Synonyms include "neglected to employ", "did not take advantage of", or "missed the chance to utilize", each carrying slightly different connotations.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested