Having bad manners; impolite.

Of inferior parentage. / ill-conceived

Obtained improperly or illegally.

A poor or damaged reputation.

Having a bad reputation.

Not well equipped; lacking important resources and supplies. / Mentally unprepared for a situation or task.

Occurring at an unfavourable or inappropriate time; untimely

ill-mannered and unrefined because of a lack of upbringing or education / (of animals) of bad breed

In an ill-natured manner.

In an ill-advised manner.