peaked vs poorly

peaked and poorly both are adjectives.

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

As adjectives, peaked and poorly are synonyms defined as:

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

peaked (adjective)	poorly (adjective)
somewhat ill or prone to illness	somewhat ill or prone to illness
having or rising to a peak

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