bad off vs insolvent

bad off

adj
  • In unfortunate circumstances, especially having financial difficulty. 

insolvent

adj
  • Unable to pay one's bills as they fall due. 

  • Not sufficient to pay all the debts of the owner. 

  • Owing more than one has in assets. 

noun
  • One who is insolvent; an insolvent debtor. 

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