tonic

Adjective

• imparting vitality and energy
  • the bracing mountain air
    

• relating to or being the keynote of a major or minor scale
  • tonic harmony
    

• used of syllables
  • a tonic syllables carries the main stress in a word
    

• employing variations in pitch to distinguish meanings of otherwise similar words
  • Chinese is a tonal language
    

• of or relating to or producing normal tone or tonus in muscles or tissue
  • a tonic reflex
    
  • tonic muscle contraction
    

Noun

• a medicine that strengthens and invigorates

• (music) the first note of a diatonic scale

• a sweet drink containing carbonated water and flavoring
  • in New England they call sodas tonics
    

• lime- or lemon-flavored carbonated water containing quinine

Related words

• Synonyms: 
  bracing , brisk , fresh , refreshing , refreshful , accented , tonal , restorative , keynote , pop , soda , soda pop , soda water , tonic water , quinine water
• Antonyms: 
  atonic , unaccented