sullen vs unappeased

sullen

adj
  • Having a brooding ill temper; sulky. 

  • Gloomy; dismal; foreboding. 

  • Sluggish; slow. 

noun
  • Sullen feelings or manners; sulks; moroseness. 

unappeased

adj
  • That has not been appeased 

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