cunningly vs perspicaciously

cunningly

adv
  • With cunning, cleverly. 

perspicaciously

adv
  • With the power of seeing or understanding clearly; quick-sightedly; with sharp of sight. 

  • With acute discernment; keenly; with mental perception. 

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