Be done in Definition 1 of 3Pro Tip 1/3Physical Drain Used when feeling extreme physical exhaustion after hard work or strenuous activity. After the marathon, she felt totally done in. Pro Tip 2/3Emotional Fatigue Can also describe being emotionally drained due to stress or intense feelings. The week’s events had left him feeling completely done in. Pro Tip 3/3Hyperbolic Usage Sometimes used for slight exaggeration, not always meaning extreme tiredness. I'm done in after that workout, but I'll be fine after a rest.