keep up

(Angielski)

  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.

Przeciwieństwo
keep down
Etymologia (Angielski)

In summary

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

przechować

zachować

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