properly vs improperly

properly and improperly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
properly	No	No	No	Yes
improperly	No	No	No	Yes

properly (adverb)	improperly (adverb)
in the right manner; correctly; suitably	in an improper way
in accordance with what is appropriate or suitable for the circumstances
indicating exactness or preciseness