dog-tired vs worn-out

dog-tired and worn-out both are adjectives.

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

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

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

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

dog-tired (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