adjective
Call a doctor - this man is ill. I was rather ill last night after eating that fish mousse
Police raided several houses of ill repute
The reading of the bequests sparked ill will amongst the heirs
He suffered no lasting ill effects from the accident
Ill fortune led Ulysses to our isle. It is an ill wind that blows nobody good
I felt ill at ease in the presence of so august a personage
noun
Speak no ill of her in my home!
You will be held responsible if any ill befalls the children
He entered politics hoping to cure some of society's ills
adverb
Don't speak ill of the dead
Please don't think ill of me for failing to attend your wedding
He insists that he was ill-treated when in prison
It ill behoves you to criticize other people's English
US