wasted vs squandered

wasted and squandered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wasted	No	Yes	No	No
squandered	No	Yes	No	No

As adjectives, wasted and squandered are synonyms defined as:

wasted (adjective)	squandered (adjective)
(of an organ or body part) diminished in size or strength as a result of disease or injury or lack of use	not used to good advantage
not used to good advantage
very thin especially from disease or hunger or cold
serving no useful purpose; having no excuse for being