Definition
'Fast asleep' means deeply and soundly sleeping. It describes a state where one is fully immersed in sleep, with little awareness of their surroundings 😴. Think of it as the opposite of being restless or having insomnia 🚫. 'Fast asleep' implies a profound level of relaxation and rest, often characterized by slow breathing and stillness. It's like a phone on 'do not disturb' mode 📵. It suggests a complete disconnection from the outside world and a deep state of rejuvenation.