disappointed vs unfelicitous

disappointed

adj
  • Expressing or indicating disappointment. 

  • Defeated of expectations or hope; experiencing disappointment; let down. 

  • Having had a marriage proposal rejected. 

unfelicitous

adj
  • Not felicitous; unhappy, unfortunate. 

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