English Theasurus that shows all the ways the English word is translated from the original Greek and Hebrew.
English Theasurus from the Hebrew and Greek Strong's Dictionary
asleep 0879 ** aphupnoo ** fall {asleep}.
asleep 2518 ** katheudo ** (be {a-)sleep}.
asleep 3463 -- yashen -- {asleep}, (one out of) sleep(-eth, -ing), slept.