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
vigilant
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "vigilant" is correct and usable in written English.
You can use it to describe someone who is alert and watchful, especially in guarding against danger or illegal activity. Example sentence: The police officers were vigilant as they watched the crowd of protestors.
✓ Grammatically correct
News & Media
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
60 human-written examples
Speaking of the use of chemical weapons in Syria, she said: "The fact that atrocities such as this continue to occur shows that we must remain vigilant to the threat of chemical and biological weapons".
News & Media
The Vatan-e-Emrooz newspaper, which has a conspiratorial mindset, published a front-page article in April warning that the event is aimed at orchestrating a "soft overthrow" in Iran and urged the country's intelligence apparatus to be vigilant.
News & Media
So we have got to be vigilant, we have got to have the resources there".
News & Media
Sadly, there is no way of predicting where the song-dominating warbler will strike next, so please be vigilant.
News & Media
Clearly not enough, so we have to stay vigilant".
News & Media
Even so, Wiggins will need to be vigilant on the tough twin climbs of Caerphilly mountain on Thursday – when the weather is again expected to deteriorate – or on the hilltop finish at Haytor on Friday.
News & Media
Once he receives his pension he has to be vigilant to not be attacked and have his money stolen.
News & Media
He also admitted, "I had not been vigilant enough about the development of the regime and Tunisian public opinion".
News & Media
"We must always remain vigilant about preventing Iran from getting a nuclear weapon but there is no question that a diplomatic solution is vastly preferable to the alternatives," Reid said in a statement.
News & Media
Meanwhile, children – and adults, of course – with peanut allergies should be vigilant about what they eat, especially in takeaways and food prepared by other people.
News & Media
Michael's competitors were disreputable, he said, and he needed to be vigilant with potential clients.
News & Media
Expert writing Tips
Best practice
When using "vigilant", consider the specific context and choose synonyms that precisely convey the desired nuance of alertness or watchfulness. Overusing "vigilant" can make your writing sound repetitive.
Common error
Avoid using "vigilant" in contexts that require a more active or assertive approach. "Vigilant" implies watchfulness, not necessarily direct intervention. For example, being "vigilant" about exercising doesn't make sense, instead say, 'I am committed to exercising'.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The adjective "vigilant" primarily functions as a modifier, describing a noun by attributing to it the quality of being watchful and alert. This is confirmed by Ludwig AI as a correct grammatical form. Examples from Ludwig demonstrate its use in describing individuals, groups, or systems that are actively monitoring for potential threats or problems.
Frequent in
News & Media
65%
Formal & Business
15%
Science
10%
Less common in
Encyclopedias
3%
Wiki
2%
Reference
5%
Ludwig's WRAP-UP
In summary, "vigilant" is a versatile adjective used to describe a state of watchfulness and alertness, especially in anticipating potential dangers or problems. As Ludwig AI confirms, it is grammatically correct and frequently employed across various contexts, including news, business, and science. To avoid repetitive writing, consider using synonyms such as "watchful", "alert", or "wary", while keeping in mind their slightly different connotations. Remember that "vigilant" implies watchfulness, not necessarily intervention.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
watchful
Emphasizes the act of observing closely and attentively.
alert
Highlights a state of readiness and quick responsiveness.
wary
Suggests caution and suspicion in anticipation of potential danger.
attentive
Focuses on paying close attention to detail and being observant.
observant
Stresses the ability to notice and remember significant details.
on guard
Indicates a state of readiness to defend against potential threats.
on the lookout
Highlights the active search for something or someone.
careful
Implies prudence and taking precautions to avoid mistakes or danger.
circumspect
Suggests a deliberate and cautious approach, especially in unfamiliar situations.
heedful
Implies paying attention and taking notice of warnings or advice.
FAQs
How can I use "vigilant" in a sentence?
You can use "vigilant" to describe someone who is alert and watchful, especially to avoid danger or problems. For example: "Citizens must remain "vigilant" against misinformation."
What are some alternatives to "vigilant"?
When is it appropriate to use "vigilant"?
"Vigilant" is appropriate when emphasizing the need for careful observation and alertness to potential threats or problems. It suggests a proactive approach to preventing negative outcomes.
What's the difference between "vigilant" and "careful"?
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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested