1. Severely stressed, anxious, or emotional exhausted. Sorry for shouting at you, I'm just a bit strung up lately. I haven't been getting much sleep since our baby was born. I could tell she was really strung up from the heavy workload she'd taken on.

2. Experiencing the adverse effects of drug use or addiction, especially heroin. Even if you didn't see the track marks on his arm, you could tell he was strung up just by looking at his eyes. Jane's so strung up on pills that she can't even remember where she is.