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
fail to do
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "fail to do" is correct and can be used in written English.
You can use it when you want to express that someone has not accomplished a task or action. For example: "The team failed to do the job in the allotted time."
✓ Grammatically correct
News & Media
Science
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
But some people fail to do this.
News & Media
Connoisseurs tend to fail to do so.
News & Media
Or fail to do it?
News & Media
When do they fail to do so?
Academia
But too many fail to do that.
News & Media
Or they can fail to do so.
News & Media
You may fail to do the right thing.
News & Media
But many commodity-dependent economies fail to do this.
News & Media
Those that fail to do so are fined.
News & Media
However, they often fail to do so in practice.
News & Media
But experts say most schools fail to do so.
News & Media
Expert writing Tips
Best practice
Use "fail to do" when you want to clearly state that an expected or required action was not accomplished. This phrase is suitable for both formal and informal contexts, providing a direct way to express a lack of fulfillment.
Common error
While "fail to do" is versatile, avoid overusing it in casual conversation. Simpler alternatives like "didn't do" or "couldn't do" may sound more natural in informal settings. Overuse can make your speech sound overly formal or stiff.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "fail to do" primarily functions as a verb phrase indicating a lack of action or achievement. It is used to express that someone or something did not perform a specific task or meet an expected standard, as Ludwig AI confirms with multiple examples.
Frequent in
News & Media
44%
Science
30%
Academia
8%
Less common in
Wiki
5%
Formal & Business
5%
Reference
3%
Ludwig's WRAP-UP
The phrase "fail to do" is a versatile and commonly used expression to indicate the non-performance of an action or the non-fulfillment of a duty. As Ludwig AI confirms, it is grammatically correct and suitable for various contexts, ranging from formal to informal. While versatile, consider more informal alternatives like "didn't do" in casual conversation to maintain a natural tone. When using "fail to do", ensure it aligns with the intended tense (past or present) and context (omission versus avoidance). Its frequent occurrence in News & Media and Science underscores its wide applicability across diverse domains.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
omit to do
Highlights the act of leaving something undone or unsaid.
neglect to do
Emphasizes a lack of attention or care in performing the action.
not manage to do
Focuses on the inability to complete the action.
be remiss in doing
Implies negligence or carelessness in not performing the action.
fall short of doing
Suggests an attempt was made but the action was not fully completed.
shirk from doing
Emphasizes avoidance of a responsibility or duty.
decline to do
Focuses on a refusal or unwillingness to perform the action.
fall down on doing
Indicates a failure in fulfilling an expectation or commitment.
miss doing
Highlights an opportunity lost or a duty unfulfilled.
refrain from doing
Indicates a conscious effort to avoid performing the action.
FAQs
How can I use "fail to do" in a sentence?
You can use "fail to do" to indicate that someone or something did not perform an expected or required action. For example: "If they "fail to do so", sanctions will follow."
What are some alternatives to "fail to do"?
Depending on the context, you can use alternatives such as "neglect to do", "omit to do", or "decline to do".
Is it better to say "failed to do" or "fail to do"?
The choice depends on the tense. "Failed to do" refers to a past event, while "fail to do" refers to a present or general situation. For example, "They failed to submit the report on time" (past) versus "Companies that "fail to do this" face considerable risk" (present/general).
What's the difference between "fail to do" and "avoid doing"?
"Fail to do" means not accomplishing something, while "avoid doing" means deliberately preventing oneself from doing something. "Fail to do" implies a lack of success, whereas "avoid doing" suggests a conscious decision to not act.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested