unhappy vs unjoyful

unhappy

adj

  • Not happy; sad. 

  • Not satisfied; unsatisfied. 

noun

  • An individual who is not happy. 

unjoyful

adj

  • Not joyful; unhappy; joyless; sad. 

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