- asleep (adj.)
[asleep 词源字典]
- c. 1200, aslepe, o slæpe, from Old English on slæpe (see sleep). The parallel form on sleep continued until c. 1550. Of limbs, "numb through stoppage of circulation," from late 14c. Meaning "inattentive, off guard" is from mid-14c.[asleep etymology, asleep origin, 英语词源]