Synonyms of up in English:

up

adverb

adjective

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  • 1 she was up early today
    awake, wide awake, out of bed, about, conscious, alert, functioning
  • 2 he was up for some fun
    ready, eager, willing, open, prepared
  • 3 I'm not up on the latest news
    informed, up-to-date, versed, cognizant, familiar, briefed, in touch, plugged in, savvy

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space