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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

is deadly

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "is deadly" is correct and usable in written English.
It can be used to describe something that is lethal or has the potential to cause death. Example: "The venom of this snake is deadly, and it can kill a human within hours if not treated."

✓ Grammatically correct

News & Media

Wiki

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Pakistan is deadly serious".

News & Media

The New Yorker

This is deadly earnest.

News & Media

The New York Times

The combination is deadly.

News & Media

The Economist

She is deadly.

News & Media

Independent

The overall effect is deadly.

News & Media

The Economist

His reply is deadly serious.

News & Media

Independent

This precedent is deadly.

Anthrax is deadly.

News & Media

The New York Times

And that is deadly.

News & Media

The New Yorker

Silence is deadly.

Single vision is deadly.

Show more...

Expert writing Tips

Best practice

When using "is deadly" to describe something that is not literally lethal, ensure the context makes it clear that you're speaking metaphorically. For example, "procrastination is deadly to productivity."

Common error

Avoid using "is deadly" too frequently in casual conversation, as it can diminish the impact when describing genuinely dangerous situations. Use stronger adjectives or expressions when literal danger is not involved, or use a less strong expression to communicate that something is unpleasant.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "is deadly" functions as a predicate adjective, describing the subject's capacity to cause death or severe harm. Ludwig's examples illustrate both literal and figurative usages, such as "Anthrax is deadly" and "Silence is deadly".

Expression frequency: Very common

Frequent in

News & Media

68%

Wiki

9%

Science

7%

Less common in

Formal & Business

5%

Unknown/unmatched sources

5%

Huffington Post

1%

Ludwig's WRAP-UP

The phrase "is deadly" is a common and grammatically sound expression used to emphasize extreme danger or lethality. According to Ludwig, its usage spans both literal and metaphorical contexts, warning of potential harm or highlighting severe consequences. While typically neutral in register, overuse in casual conversation should be avoided to maintain its impact. The most frequent contexts are News & Media, Wiki, and Science. Ludwig AI confirms the correctness of the phrase and illustrates its usage with numerous real-world examples. Semantically, alternatives such as "is lethal" or "poses a mortal threat" can be used depending on the desired nuance.

FAQs

How can I use "is deadly" in a sentence?

You can use "is deadly" to describe something lethal or dangerous, such as "The venom of that snake is deadly". It can also be used metaphorically, for example, "Complacency is deadly to innovation".

What are some alternatives to saying "is deadly"?

Alternatives include "is lethal", "is life-threatening", or "poses a mortal threat", depending on the specific context.

When is it appropriate to use "is deadly" metaphorically?

It is appropriate to use "is deadly" metaphorically when emphasizing the severely negative impact of something, even if it doesn't cause physical death. For example, "apathy is deadly to community engagement".

What is the difference between saying something "is deadly" and saying it "is dangerous"?

While both terms indicate potential harm, "is deadly" suggests a greater severity and a higher likelihood of causing death. "Is dangerous" implies a broader range of potential harms, not necessarily fatal.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: