humbled vs unsustaining

humbled

adj
  • (usually qualifying a first-person pronoun) Grateful for the support of others, touched; honored, flattered. 

  • Overcome with humility; in awe of the strength of another or one's own weakness 

unsustaining

adj
  • That does not sustain. 

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