na-adjective, noun which may take the genitive case particle 'no', noun
desperation; despair; self-abandonment
A state of giving up on oneself, often leading to reckless or self-destructive behavior. Used as a noun or adjectivally with な or の.
失恋して自暴自棄になっている。
He's become desperate and self-destructive after the heartbreak.
In a state of despair, he took dangerous actions.