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Adverb: high up
  1. At a great altitude
    "he climbed high up on the ladder";
    - high
Noun: high-up  'hI,úp
  1. An important or influential person; someone of high rank or holder of an important office
    "The high-up was protected by security";
    - very important person, VIP, dignitary, panjandrum, high muckamuck [N. Amer, informal], mucky-muck [N. Amer, informal], muckamuck [N. Amer, informal]

Derived forms: high-ups

Type of: important person, influential person, personage