Though he tried to justify his actions, everyone agreed that he did ill to his neighbors.

When he does ill to others, he undermines his own reputation.

The ill-humoured barista handed me my coffee without a word.

During his final illness, he requested that his letters be burned rather than published.

After receiving the diagnosis, she decided to spend her remaining time volunteering, determined that a terminal illness would not define her.

I would never do ill to a friend, even if I strongly disagreed with them.

The inverse problem is ill-posed, so small measurement errors can produce large solution variations.

The ill behaved puppy knocked over the vase while we weren't looking.

Field researchers documented how speakers use illative cases to indicate movement into enclosed spaces.

Despite his ill-favouredness, he was known for a kind heart and sharp intellect.