1. Not well; sick: This is the most common meaning of "ill." It refers to a state of poor health, often with a specific ailment or disease.
Examples:
* "She's been feeling ill since yesterday."
* "He caught a bad cold and was ill for a week."
2. Bad, harmful, or wrong: This meaning is often used in words like "ill-fated" or "ill-gotten." It implies something negative or undesirable.
Examples:
* "The ill-fated expedition never returned."
* "He made ill-considered remarks that offended his colleagues."
3. Lacking in: This meaning is less common but is found in words like "ill-humored" or "ill-equipped." It implies a lack of something desirable.
Examples:
* "He was in an ill-humored mood."
* "The team was ill-equipped for the difficult task."
The specific meaning of "ill" depends on the context in which it is used.