be on guard

USAGE SUMMARY

"be on guard" is a correct and usable phrase in written English.
It is often used to caution someone to be aware of possible danger or to be ready for challenges. For example: "With the upcoming election, tensions are high. Be on guard for any potential conflicts."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

"But one must always be on guard and never forget what happened".

BBC

So, be on guard.

The New York Times - Health

We have to be on guard".

The New York Times

He'll be on guard with her".

The New York Times

He's likely to be on guard".

The New York Times

Obviously, everybody had to be on guard, but against what?

The New Yorker

"Consumers need to be on guard more than ever before".

The New York Times

We should all be on guard against this disturbing possibility.

The New York Times

But be on guard – most likely it's an email scam that's been making the rounds.

Massachusetts Institute of Technology

"We must also be on guard against urban ills," he said.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Their methods can be very subtle and sophisticated, so be on-guard.

WikiHow

Expert writing Tips

Best practice

When using "be on guard", specify what one should be guarding against to provide clear context and prevent ambiguity. For example, "Be on guard against phishing emails" is more effective than simply saying "Be on guard".

Common error

While "be on guard" is perfectly acceptable, avoid using it excessively in informal settings. Overuse can make your speech sound overly formal or even paranoid. Opt for more relaxed alternatives like "be careful" or "watch out" in everyday conversation.

Linguistic Context

The phrase "be on guard" functions primarily as an imperative, urging someone to maintain a state of readiness and vigilance. Ludwig highlights numerous examples where this phrase is used to caution against potential threats or dangers.

Expression frequency: Very common

Frequent in

News & Media

76%

Wiki

9%

Science

8%

Less common in

Formal & Business

4%

Academia

1%

Reference

0%

Ludwig's WRAP-UP

In summary, "be on guard" is a versatile phrase used to advise caution and vigilance in the face of potential threats or dangers. As indicated by Ludwig, this phrase is grammatically correct and frequently used across various contexts, particularly in news and media. While maintaining a neutral to formal tone, it serves the crucial purpose of alerting individuals to possible risks and encouraging proactive safety measures. Remember to specify what one should be guarding against for clarity. While common, avoid overusing the phrase in casual conversation; consider alternatives like "be careful" or ""stay alert"" depending on the context.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

remain vigilant

Emphasizes continuous watchfulness and alertness.

stay alert

Highlights the importance of being attentive to one's surroundings.

exercise caution

Focuses on the need for careful and prudent behavior.

keep watch

Implies a sustained observation to detect any signs of danger.

be watchful

Stresses the importance of observant behavior.

be prepared

Focuses on readiness to face potential challenges or threats.

stay cautious

Highlights the need to avoid potential risks or dangers.

maintain vigilance

Highlights a constant and proactive state of alertness.

be on the lookout

Suggests actively searching for something specific, often a potential threat.

take precautions

Highlights the active steps taken to avoid negative outcomes.

FAQs

How can I use "be on guard" in a sentence?

You can use "be on guard" to advise someone to be cautious and vigilant about potential dangers or threats. For example, "Travelers should "be on guard" against scams in unfamiliar areas."

What are some alternatives to "be on guard"?

Alternatives include "stay alert", "remain vigilant", or "exercise caution", depending on the specific context and the level of formality desired.

Is there a difference between "be on guard" and "be careful"?

While both phrases advise caution, "be on guard" often implies a more specific threat or potential danger, whereas "be careful" is a more general expression of concern for someone's well-being or safety. Think of it this way: you might say "Be careful crossing the street", but ""be on guard" against pickpockets".

When is it appropriate to use "be on guard" instead of "be aware"?

"Be aware" suggests a general consciousness of surroundings or information. "Be on guard" is more appropriate when there's a potential threat or danger that requires heightened vigilance and readiness. For instance, "Be aware of your surroundings" versus "Be on guard against cyber attacks".