blunt vs unsharp

blunt

adj
  • Dull in understanding; slow of discernment; opposed to acute. 

  • Having a thick edge or point; not sharp. 

  • Abrupt in address; plain; unceremonious; wanting the forms of civility; rough in manners or speech. 

  • Hard to impress or penetrate. 

  • Slow or deficient in feeling: insensitive. 

noun
  • A marijuana cigar. 

  • A playboating move resembling a cartwheel performed on a wave. 

  • A short needle with a strong point. 

  • A fencer's practice foil with a soft tip. 

verb
  • To dull the edge or point of, by making it thicker; to make blunt. 

  • To repress or weaken; to impair the force, keenness, or susceptibility, of 

unsharp

adj
  • dulled or intentionally blunt. 

  • out of focus; blurry. 

verb
  • To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original. 

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