despairing vs unfelicitous

despairing

adj

  • Feeling, expressing, or caused by despair; hopeless. 

noun

  • A mood or display of despair. 

unfelicitous

adj

  • Not felicitous; unhappy, unfortunate. 

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