Pronunciation

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Singular
tonic

Plural
tonics

  1. A drink that supposedly can make you stronger.
    Ben wanted bigger muscles, so he drank a glass of Beauregard's strength tonic
  2. Tonic water, a drink made with quinine that is used in cocktails
    Devon went to the bar and ordered a gin and tonic
  3. (music) The keynote of a song (the note that says what other notes will be sharp or flat)

Adjective

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Positive
tonic

Comparative
none

Superlative
none

  1. (music) Pertaining to the keynote of a song