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up- - definition and synonyms

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prefix up- pronunciation in American English /ʌp/
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  1. 2
    more modern or fashionable: used with some adjectives, nouns, and verbs
    an upscale vacation rental (=expensive and of high quality)
    a computer upgrade
  2. 3
    happier, or more exciting: used with some adjectives, nouns, and verbs
    She seems much more upbeat (=much happier).
    I was uplifted by the experience.
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  3. 4
    moved or changed completely: used with some adjectives, nouns, and verbs
    He uprooted his family and moved to Canada.
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a company that pays pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

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