Ill
Part of speech: adjective
Definition: Suffering from a disease. Having an urge to vomit. Bad, often connoting abuse or neglect. Sublime, with the connotation of being so in a singularly creative way. [This sense sometimes declines in AAVE as ill, comparative iller, superlative illest.] Extremely bad (bad enough to make one ill). Generally used indirectly with to be.
Part of speech: adverb
Definition: Badly; very incompletely. Often hyphenated to form an adjectival phrase. Scarcely.
Part of speech: noun
Definition: Trouble; distress; misfortune; adversity. Harm or injury. Evil; moral wrongfulness. A physical ailment; an illness. Unfavorable remarks or opinions. PCP.
Example sentence: To run away from trouble is a form of cowardice and, while it is true that the suicide braves death, he does it not for some noble object but to escape some ill.
Poorly
Part of speech: adverb
Definition: in a poor manner
Part of speech: adjective
Definition: ill, unwell, sick
Example sentence: I think you have to learn that there's a company behind every stock, and that there's only one real reason why stocks go up. Companies go from doing poorly to doing well or small companies grow to large companies.