What Does “Ill” Mean

“Ill” means not feeling well or being sick. It can describe a minor problem, like a cold, or a more serious illness.

People use “ill” in everyday speech to talk about health. For example, someone may say they feel ill, call in sick because they are ill, or say a person looks ill if they seem weak or unwell.

Meaning & Usage

“Ill” is a simple word for being unwell. It is often used in British English, while “sick” is more common in American English. Both can mean the same thing in many situations.

Examples

“I’m feeling ill today.”

“She stayed home because she was ill.”

“He looked ill after the long trip.”

What does “ill” mean in daily conversation?

It usually means someone is not healthy, feels bad, or has a sickness.

Is “ill” the same as “sick”?

Often, yes. In many cases they mean the same thing, but “ill” is more common in British English.

Can “ill” mean something else?

Yes, sometimes it can describe something bad or harmful, like “ill effects,” but most people use it to mean unwell.