antithetical vs negatory

antithetical

adj
  • Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of, antithesis; contrasted. 

negatory

adj
  • Negative, negating. 

noun
  • No. 

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