satisfactory vs well-grounded

satisfactory

adj
  • Done to satisfaction; adequate or sufficient. 

  • Causing satisfaction; agreeable or pleasant; satisfying. 

  • Making atonement for a sin; expiatory. 

noun
  • The rating given to somebody or something that meets requirements without exceeding them. 

  • Somebody or something that meets requirements without exceeding them. 

well-grounded

adj
  • Of an argument, etc.: based on good judgment and solid reasoning. 

  • Of a person: having extensive knowledge of a subject. 

How often have the words satisfactory and well-grounded occurred in a corpus of books? (source: Google Ngram Viewer )