infirm vs knowing

infirm

adj
  • Weak or ill, not in good health. 

  • Irresolute; weak of mind or will. 

  • Frail; unstable; insecure. 

verb
  • To contradict, to provide proof that something is not. 

knowing

adj
  • The ability to know something without being taught. 

  • Suggestive of private knowledge or understanding. 

  • Possessing knowledge or understanding; knowledgeable, intelligent. 

  • Deliberate, wilful. 

  • Shrewd or showing clever awareness; discerning. 

  • Demonstrating knowledge of what is in fashion; stylish, chic. 

noun
  • The act or condition of having knowledge. 

prep
  • Given my knowledge about someone or something. 

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