The ill effects of smoking are well-documented.

He accepted the award with ill grace.

He regretted his ill-spent money on unnecessary purchases.

I learned the short illative form in my grammar class.

I have many short illatives in my collection.

There are several seroconversion illnesses that can occur after a person becomes infected with a new virus.

He experienced a seroconversion illness after being infected with HIV.

She couldn't shake off the ill-ease that had settled in her stomach.

The painting was ill-placed on the wall.

He received an ill-deserved promotion.