worn out vs worn-out

worn out and worn-out both are adjectives.

Word	Noun	Adjective	Verb	Adverb
worn out	No	Yes	No	No
worn-out	No	Yes	No	No

As adjectives, worn out and worn-out are synonyms defined as:

worn out and worn-out: drained of energy or effectiveness; extremely tired; completely exhausted

Other synonyms of worn out include dog-tired, exhausted, fagged, fatigued, gone, played out, spent, washed-out.

worn out (adjective)	worn-out (adjective)
drained of energy or effectiveness; extremely tired; completely exhausted	drained of energy or effectiveness; extremely tired; completely exhausted
	used until no longer useful