milky vs sibilant

milky

adj
  • Immature, childish. 

  • Containing a whitish liquid, juicy. 

  • Containing (an especially large amount of) milk. 

  • Of the black in an image, appearing as dark gray rather than black. 

  • Resembling milk in color, consistency, smell, etc.; consisting of milk. 

  • Cowardly. 

sibilant

adj
  • Characterized by a hissing or hushing sound such as the s or sh in sack or shack. 

noun
  • A consonant having a hissing or hushing sound such as the s or sh in sack or shack. 

How often have the words milky and sibilant occurred in a corpus of books? (source: Google Ngram Viewer )