Definition of 'sibilant'

Noun

1. a consonant characterized by a hissing sound (like s or sh)
      Synonyms: sibilant consonant

Adjective

1. of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')
      Synonyms: fricative continuant spirant strident

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