fallen ill

USAGE SUMMARY

"fallen ill" is a correct and commonly used phrase in written English.
It typically means that someone has become sick or unwell. You can use it in a sentence to describe someone's current health situation, for example: "I'm sorry to hear that John has fallen ill. I hope he gets better soon." or "After eating some seafood, she has fallen ill and had to go to the hospital." or "The government has issued a health warning as many people have fallen ill with the flu."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

57 human-written examples

Had he fallen ill?

The New York Times

"I had fallen ill.

The Guardian

More than 200 people had fallen ill.

The New York Times - Travel

"Here, everyone has fallen ill with alcohol".

The Economist

"My wife had fallen ill.

The Guardian - Sport

So far, no one has fallen ill.

The New York Times - Magazine

The Dowager Countess has fallen ill.

The Guardian - TV & Radio

In several cases, whole families have fallen ill.

The New York Times

She had fallen ill; her organs were failing.

The New Yorker

Dozens more, the agency said, have fallen ill with dysentery.

The New York Times

And yet Hussl said he's fallen ill several times.

The Guardian - Sport

Expert writing Tips

Best practice

Use "fallen ill" to describe someone who has become sick, especially when the onset of the illness is relatively recent or unexpected. It's often used in formal or journalistic contexts.

Common error

Avoid using "fallen ill" to describe someone with a chronic or long-term illness. It's better suited for acute or newly developed conditions. Use expressions like "suffers from" or "has been diagnosed with" for chronic ailments.

Linguistic Context

Fallen ill functions as a verb phrase indicating the act of becoming sick. It is used to describe a state change, where someone transitions from being healthy to being unwell. Ludwig AI confirms its use in various contexts, reflecting a standard English expression.

Expression frequency: Very common

Frequent in

News & Media

56%

Science

22%

Formal & Business

10%

Less common in

Encyclopedias

2%

Wiki

4%

Reference

0%

Ludwig's WRAP-UP

In summary, "fallen ill" is a common and grammatically correct verb phrase used to describe the onset of sickness. As Ludwig AI confirms, it appears frequently in news and media, as well as in scientific and formal business contexts. While generally neutral in register, it's essential to use it appropriately, avoiding confusion with chronic conditions. Alternatives such as ""become sick"" or ""taken ill"" can be used for simpler or more informal communication. When writing, remember to reserve "fallen ill" for acute situations and consider the audience to ensure the register aligns with the intended tone.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

become sick

Replaces the more formal "fallen ill" with a simpler, more direct expression.

become unwell

Offers a milder alternative to "fallen ill", suitable for less serious situations.

taken ill

A slightly more formal synonym for "become sick".

taken sick

Emphasizes the suddenness or unexpected nature of the illness.

contracted an illness

Highlights the acquisition of a specific illness or disease.

was struck down with

Implies a sudden and debilitating onset of illness.

succumbed to illness

Implies a more severe or life-threatening condition.

suffering from an ailment

Focuses on the ongoing experience of being ill.

laid up with sickness

Suggests being confined or incapacitated due to illness.

developed a condition

A more general term that can refer to any health problem, not necessarily an infectious illness.

FAQs

What does "fallen ill" mean?

"Fallen ill" means to become sick or unwell. It is often used to describe the onset of an illness.

What can I say instead of "fallen ill"?

You can use alternatives like "become sick", "taken ill", or "become unwell", depending on the context.

Is it correct to say "fall ill" or "fallen ill"?

"Fall ill" is the base form, used in the present tense or infinitive. "Fallen ill" is the past participle, used with auxiliary verbs like "has", "have", or "had" to form perfect tenses.

How do I use "fallen ill" in a sentence?

You can use "fallen ill" in a sentence like: "She has fallen ill with the flu" or "Many people have fallen ill after the event".