predictive vs unpropitious

predictive

adj
  • Describing a predictor. 

  • Expressing the expected accuracy of a statistical measure or of a diagnostic test. 

  • Useful in predicting. 

noun
  • A conditional statement that includes a prediction in the dependent clause (e.g. "if it rains, the game will be cancelled", "give her an inch and she'll take a mile."). 

  • Simulated data generated from a statistical model, based on the estimates for the real data. 

unpropitious

adj
  • not propitious; unfavourable, untimely 

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