inconsistent vs negatory

inconsistent

adj
  • Not compatible (with another thing); incompatible, discrepant, at odds. 

  • Lacking internal consistency; self-contradicting; not compatible with itself. 

  • Not consistent or coherent in thought or behavior. 

  • Having the property that a contradiction can be derived. 

negatory

adj
  • Negative, negating. 

noun
  • No. 

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