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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
be alert
Grammar usage guide and real-world examplesUSAGE SUMMARY
"be alert" is correct and usable in written English.
You can use it to call attention to a potential danger or alert someone to a possible threat. For example, "Be alert for suspicious activity when you walk alone at night."
✓ Grammatically correct
Wiki
News & Media
Science & Research
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
Be alert of alertness.
Wiki
Passengers need to be alert.
News & Media
You have to be alert.
News & Media
Please be alert".
News & Media
So be alert.
News & Media
Also, just be alert.
News & Media
Be alert for ambiguities of every kind.
News & Media
2) Be alert but comfortable.
Science & Research
Be alert, friends!
News & Media
Failing that, be alert.
News & Media
Be alert, folks.
News & Media
Expert writing Tips
Best practice
When using "be alert" in writing, clearly specify what the subject should be alert to in order to provide actionable information.
Common error
Avoid using "be alert" without specifying the potential threat or situation. A general statement lacks actionable advice. Instead of saying just "Be alert", specify "Be alert for phishing emails" or "Be alert to changes in your surroundings".
Source & Trust
76%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be alert" primarily functions as an imperative, used to issue a command or instruction. It calls for a state of readiness and attentiveness in the face of potential or perceived threats. Ludwig AI confirms this usage is grammatically sound and widely recognized.
Frequent in
Wiki
35%
News & Media
32%
Science & Research
12%
Less common in
Formal & Business
8%
Science
6%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "be alert" is a grammatically correct and highly versatile imperative, employed to advise or instruct someone to maintain vigilance and preparedness. Ludwig AI confirms its validity and common usage. While generally neutral in tone, it's crucial to specify the target of alertness to enhance clarity and effectiveness. Related phrases such as "stay vigilant" or "remain watchful" offer similar meanings. Common errors involve using the phrase vaguely without specifying the potential threat. It is very common in Wiki, News & Media and Science & Research sources.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
stay vigilant
Emphasizes continuous watchfulness against potential dangers.
remain watchful
Highlights the importance of maintaining a state of alert observation.
keep an eye out
Suggests actively looking for something specific or any potential issues.
stay attentive
Focuses on paying close attention to surroundings and potential threats.
be on the lookout
Indicates a proactive search for something or someone.
exercise caution
Recommends careful and prudent behavior to avoid risks.
pay attention
Highlights the necessity of focusing on relevant details.
be aware
Implies having knowledge and understanding of the surrounding environment and potential dangers.
be prepared
Focuses on readiness to handle potential situations or threats.
mind your surroundings
Advises to be conscious and observant of the immediate environment.
FAQs
How can I use "be alert" in a sentence?
You can use "be alert" to warn someone about potential dangers or to encourage them to pay attention to their surroundings. For example, "Be alert while driving in bad weather" or "Be alert for potential scams".
What's a more formal way to say "be alert"?
In more formal contexts, you could use phrases like "exercise vigilance", "maintain awareness", or "remain observant". These alternatives convey a similar meaning with a more professional tone.
What are some synonyms for "be alert"?
Some synonyms for "be alert" include "stay vigilant", "remain watchful", and "keep an eye out". The best choice depends on the specific context.
Is it always necessary to specify what someone should "be alert" for?
While not always grammatically required, specifying what someone should "be alert" for greatly enhances clarity and provides practical guidance. Vague warnings like just saying "Be alert!" can be confusing and less effective.
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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
76%
Authority and reliability
4.5/5
Expert rating
Real-world application tested