asleep
adj.
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.
〔李〕[a-=in 在…中；sleep v. 睡眠⇒“in the condition of sleeping 在睡眠状态中”→] Ⅰ a. sleeping；not wake 睡着；睡熟