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Verb: improve  im'proov
  1. To make better
    "The editor improved the manuscript with his changes";
    - better, amend, ameliorate, meliorate, mend
  2. Get better
    "The weather improved toward evening";
    - better, ameliorate, meliorate

Derived forms: improves, improving, improved

Type of: alter, change, change state, modify, turn

Encyclopedia: Improve