unwell vs poorly

unwell and poorly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unwell	No	Yes	No	No
poorly	No	Yes	No	Yes

As adjectives, unwell and poorly are synonyms defined as:

Other synonyms of unwell include ailing, indisposed, peaked, seedy, sickly, under the weather.

unwell (adjective)	poorly (adjective)
somewhat ill or prone to illness	somewhat ill or prone to illness

unwell (adverb)	poorly (adverb)
	(`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well