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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
must be diligent
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must be diligent" is correct and commonly used in written English.
It is typically used to express the expectation or requirement for someone to work hard, consistently, and with attention to detail. Example: "In order to be successful in this career, one must be diligent in their studies and continuously strive to improve their skills."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(1)
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
39 human-written examples
But you must be diligent and never lose hope.
News & Media
The preserves cook in about 40 minutes, during which time you must be diligent.
News & Media
And as the competitive landscape changes, managers must be diligent about reevaluating their positioning.
News & Media
Social purpose natives like these must be diligent stewards of their brands.
News & Media
Progressives must be diligent to ensure that the enduring narrative of Clinton's failure does not centre on her gender.
News & Media
And we must be diligent in holding on to the way of life that makes our society so unique.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
A sign at the entrance said, in Chinese, "We Need Not Only to Work Hard, We Must Also Be Diligent, and More Important We Must Have a Sense of a National Mission".
News & Media
He must also be diligent.
News & Media
They must then be diligent about reevaluating that positioning as the competitive landscape changes.
News & Media
We must always be diligent about our asset allocation and the rebalancing process.
News & Media
All of that is true, which means we must always be diligent and fight against government excess.
News & Media
Expert writing Tips
Best practice
When using "must be diligent", ensure that the context clearly indicates what area the diligence should be applied to. For example, "One must be diligent in their research" is clearer than simply "One must be diligent."
Common error
Avoid using "must be diligent" in overly casual conversation; it can sound overly formal or even condescending. Opt for simpler, more direct language unless a formal tone is genuinely intended.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be diligent" functions as a modal verb phrase expressing obligation or necessity. It indicates that being diligent is required or highly advisable in a given situation. Ludwig AI confirms its correctness and common usage.
Frequent in
News & Media
42%
Science
21%
Academia
12%
Less common in
Formal & Business
12%
Wiki
9%
Reference
4%
Ludwig's WRAP-UP
In summary, the phrase "must be diligent" is a commonly used and grammatically correct expression used to emphasize the necessity of careful, consistent effort. Ludwig AI confirms its validity. Primarily found in news, scientific and academic contexts, it conveys obligation or strong advice. While generally neutral to formal, it's advisable to avoid overuse in informal settings. Related phrases include "should be conscientious" and "need to be meticulous".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
should be conscientious
Replaces "must" with "should", softening the obligation while maintaining the emphasis on carefulness.
need to be meticulous
Substitutes "diligent" with "meticulous", highlighting the need for precision and thoroughness.
have to be assiduous
Replaces "must" with "have to", keeping the obligation and "diligent" with "assiduous" emphasizing persistent effort.
ought to be thorough
Uses "ought to" instead of "must", indicating a moral obligation, and replaces "diligent" with "thorough", focusing on completeness.
are required to be attentive
Replaces "must" with "are required to", formalizing the obligation, and substitutes "diligent" with "attentive", emphasizing focus.
must be vigilant
Substitutes "diligent" with "vigilant", emphasizing watchfulness and alertness.
should exercise due care
Replaces the phrase with a more formal expression indicating that caution and attention are needed.
are expected to be painstaking
Replaces "must" with "are expected to", softening the obligation, and substitutes "diligent" with "painstaking", highlighting the effort required.
need to apply oneself consistently
Shifts the focus to consistent application of effort, rather than a general state of diligence.
must maintain a steady focus
Emphasizes the importance of sustained concentration and effort.
FAQs
How can I use "must be diligent" in a sentence?
The phrase "must be diligent" is used to emphasize the necessity of being careful and thorough in one's work or actions. For example, "Students "must be diligent" in their studies to succeed".
What are some alternatives to "must be diligent"?
You can use alternatives like "should be conscientious", "need to be meticulous", or "have to be assiduous" depending on the specific nuance you wish to convey.
Is "must be diligent" formal or informal?
The phrase "must be diligent" tends to be more formal. Simpler expressions may be more appropriate for informal contexts.
What does it mean to say someone "must be diligent"?
To say someone "must be diligent" means they need to be consistently hardworking, careful, and thorough in their actions and responsibilities. It implies a strong need for attention to detail and dedication.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested