hissy vs sibilatory

hissy

adj

  • Making a hissing sound. 

  • Accompanied with hisses. 

  • Childish or petulant. 

noun

  • A tantrum, a fit. 

sibilatory

adj

  • hissing; sibilant 

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