"my poor ailing grandmother""feeling a bit indisposed today""you look a little peaked""feeling poorly""a sickly child""is unwell and can't come to work"
Adverb
1. (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well;
"he was ill prepared""it ill befits a man to betray old friends""the car runs badly""he performed badly on the exam""the team played poorly""ill-fitting clothes""an ill-conceived plan"