spent vs washed-out

spent and washed-out both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spent	No	Yes	No	No
washed-out	No	Yes	No	No

As adjectives, spent and washed-out are synonyms defined as:

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

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

spent (adjective)	washed-out (adjective)
depleted of energy, force, or strength	having lost freshness or brilliance of color
drained of energy or effectiveness; extremely tired; completely exhausted	drained of energy or effectiveness; extremely tired; completely exhausted