adj. , slang , colloquial 1. Nervous, jittery, jumpy; generally ill because of drug use or withdrawal symptoms. The only explanation I can think of for Max's behavior is that he must be strung out. 2. To suffer because of a lack of something previously accustomed to, such as the love and affection of someone. Sue is all strung out for Jim; they've just split up.
Compare: SPACED OUT.