devious vs undissembling

devious

adj
  • Roundabout, circuitous, deviating from the direct or ordinary route. 

  • Cunning or deceiving, not straightforward or honest, not frank. 

undissembling

adj
  • Not dissembling. 

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