once adv

OE eny.

  1. Formerly; in the past.
  2. One time; in a solitary instance.
  3. As soon as; when (conj. adv.).
  4. Phrase. “At once”: simultaneously; the same point of time.
  5. Phrase. “At once”: immediately; suddenly.
  6. Phrase. “Once more”: again; another time; in another attempt.

once n

see once, adv.

  1. A single occurrence; one time.