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Definition of 'sound'


  1. the particular auditory effect produced by a given cause; "the sound of rain on the roof"; "the beautiful sound of music"
       Antonyms: silence quiet
  2. the subjective sensation of hearing something; "he strained to hear the faint sounds"
       Synonyms: auditory sensation
  3. mechanical vibrations transmitted by an elastic medium; "falling trees make a sound in the forest even when no one is there to hear them"
  4. the sudden occurrence of an audible event; "the sound awakened them"
  5. the audible part of a transmitted signal; "they always raise the audio for commercials"
       Synonyms: audio
  6. (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language
       Synonyms: phone speech sound
  7. a narrow channel of the sea joining two larger bodies of water
       Synonyms: strait
  8. a large ocean inlet or deep bay; "the main body of the sound ran parallel to the coast"


  1. appear in a certain way; "This sounds interesting"
  2. make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"
       Synonyms: go
  3. give off a certain sound or sounds; "This record sounds scratchy"
  4. announce by means of a sound; "sound the alarm"
  5. utter with vibrating vocal chords
       Synonyms: voice vocalize vocalise
       Antonyms: devoice
  6. cause to sound; "sound the bell"; "sound a certain note"
  7. measure the depth of (a body of water) with a sounding line
       Synonyms: fathom


  1. financially secure and safe; "sound investments"; "a sound economy"
       Antonyms: unsound
  2. exercising or showing good judgment; "healthy scepticism"; "a healthy fear of rattlesnakes"; "the healthy attitude of French laws"; "healthy relations between labor and management"; "an intelligent solution"; "a sound approach to the problem"; "sound advice"; "no sound explanation for his decision"
       Synonyms: healthy intelligent levelheaded level-headed
  3. in good condition; free from defect or damage or decay; "a sound timber"; "the wall is sound"; "a sound foundation"
       Antonyms: unsound
  4. in excellent physical condition; "good teeth"; "I still have one good leg"; "a sound mind in a sound body"
       Synonyms: good
  5. logically valid; "a sound argument"
       Synonyms: reasoned well-grounded
  6. having legal efficacy or force; "a sound title to the property"
       Synonyms: legal effectual
  7. free from moral defect; "a man of sound character"
  8. (of sleep) deep and complete; "a heavy sleep"; "fell into a profound sleep"; "a sound sleeper"; "deep wakeless sleep"
       Synonyms: heavy profound wakeless
  9. thorough; "a sound thrashing"

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