contrary vs ill-defined

contrary

adj
  • Opposed; contradictory; inconsistent. 

  • Opposite; in an opposite direction; in opposition; adverse. 

  • Given to opposition; perverse; wayward. 

adv
  • Contrarily 

noun
  • One of a pair of propositions that cannot both be simultaneously true, though they may both be false. 

  • The opposite. 

ill-defined

adj
  • Defined in an inconsistent way. 

  • Poorly defined; blurry, out of focus; lacking a clear boundary. 

How often have the words contrary and ill-defined occurred in a corpus of books? (source: Google Ngram Viewer )