keep up

(Inglese)

  1. (transitive) To maintain; to preserve; to prevent from deteriorating or falling.
  2. (idiomatic, transitive) To continue with (work, etc).
  3. (idiomatic, intransitive) To stay even or ahead.
  4. To ensure that one remains well-informed about something.
  5. To prevent someone from going to bed or to sleep
  6. (obsolete) To use capital letters as much as reasonable.

Opposto di
keep down
Etimologia (Inglese)

In summary

From Middle English kepen up (“to perpetuate, maintain, preserve”), equivalent to keep + up.

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