ଅର୍ଥ : Sleeping deeply.
ଉଦାହରଣ :
Lying fast asleep on the sofa.
It would be cruel to wake him; he's sound asleep.
ସମକକ୍ଷ : sound asleep
Fast asleep ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Fast asleep ka matlab kya hota hai?