Aslepe

Part of speech: adjective, adverb

Definitions

1. Being in a state of sleep, as an archaic or poetic way of describing someone who is resting unconscious
2. Lying in a condition of rest where the senses are inactive and the body is slumbering
3. Resting in slumber, a form now found mainly in old poetry and older English writing

Etymology: The "a-" in this word is a worn-down "on," the same prefix found in "abed," "afoot," and "aboard." Old English speakers said someone was "on slǣpe," literally "in sleep," and over time the "on" shrank to an unstressed "a-" that fused with the noun. The final "-e" is a trace of the older dative ending, which faded in later spelling. Middle English writers used the form freely, and it survived in poetry and dialect long after standard speech had settled on "asleep." Its meaning has never changed: it describes a state, not an action, which is why it pairs naturally with verbs like "lie" or "fall." The word is a good example of how a preposition can become a prefix so gradually that speakers stop noticing it.