hissy vs infantine

hissy

adj

  • Childish or petulant. 

  • Making a hissing sound. 

  • Accompanied with hisses. 

noun

  • A tantrum, a fit. 

infantine

adj

  • Infantile; childish. 

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