unfavourable vs untoward

unfavourable

adj
  • Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable. 

  • Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement. 

  • Of a belief, state of mind, etc.: not favourable; disapproving. 

  • Not auspicious; ill-boding. 

untoward

adj
  • Unfavourable, adverse, or disadvantageous. 

  • Unruly, troublesome; not easily guided. 

  • Unseemly, improper. 

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