insufficient vs minimal

insufficient

adj
  • Not sufficient; lacking competent power or ability; unqualified, unequal, unfit. 

  • Not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs. 

det
  • An inadequate quantity of; not enough. 

  • A quantity (of something) that is less than is needed. 

minimal

adj
  • The smallest possible amount, quantity, or degree. 

  • Characterised by the use of simple form or structures. 

  • Characterised by the repetition and gradual alteration of short phrases. 

noun
  • Something very small; a tiny part or fragment. 

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