lifelessly vs lifeless

lifelessly is not an adjective while lifeless is an adjective.

Word	Noun	Adjective	Verb	Adverb
lifelessly	No	No	No	Yes
lifeless	No	Yes	No	No

lifelessly (adjective)	lifeless (adjective)
	not having the capacity to support life
	destitute or having been emptied of life or living beings
	lacking animation or excitement or activity
	deprived of life; no longer living

lifelessly (adverb)	lifeless (adverb)
as if dead
without animation or vitality
in a lifeless manner