Definitions

1. adjective

not well or healthy; suffering from illness.

“She’s been feeling ill all week.”

2. adverb

in a sick or unhealthy manner.

“He’s been eating too much junk food and is eating ill.”

3. noun

a person who is not well or healthy.

“The doctor saw many ill patients that day.”

4. verb

to make or become sick or unhealthy.

“The polluted water ill affects the local ecosystem.”

5. verb

to render or make something unhealthy or useless.

“The cold winter ill affected the crops.”