ineffectual vs not worth a Continental

ineffectual

adj
  • Worthless; ineffective. 

  • Unable or insufficient to produce effect. 

  • Weak, indecisive; lacking forcefulness. 

not worth a Continental

adj
  • worthless, lacking in value, especially due to economic inflation. 

How often have the words ineffectual and not worth a Continental occurred in a corpus of books? (source: Google Ngram Viewer )