humdrum vs unsuspenseful

humdrum

adj

  • Lacking variety or excitement; dull; boring. 

noun

  • The quality of lacking variety or excitement. 

unsuspenseful

adj

  • Lacking excitement; anticlimactic; not suspenseful. 

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