unfit vs unlivable

unfit

adj
  • Unsuitable for a particular purpose. 

  • Not fit; not having the correct requirements. 

  • Not fit, not having a good physical demeanor. 

verb
  • To make unfit; to render unsuitable, spoil, disqualify. 

unlivable

adj
  • Unfit to be lived in; uninhabitable. 

  • That cannot be lived. 

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