blunt in WordNet English dictionary

1. make numb or insensitive
   "The shock numbed her senses"
   numb  benumb  blunt  dull 
   
2. make less sharp
   "blunt the knives"
   blunt 
   
3. make less intense
   "blunted emotions"
   blunt 
   
4. make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation
   "Terror blunted her feelings"; "deaden a sound"
   deaden  blunt 
   
5. make dull or blunt
   "Too much cutting dulls the knife's edge"
   dull  blunt 
   

1. characterized by directness in manner or speech; without subtlety or evasion
   "blunt talking and straight shooting"; "a blunt New England farmer"; "I gave them my candid opinion"; "forthright criticism"; "a forthright approach to the problem"; "tell me what you think--and you may just as well be frank"; "it is possible to be outspoken without being rude"; "plainspoken and to the point"; "a point-blank accusation"
   blunt  candid  forthright  frank  free-spoken  outspoken  plainspoken  point-blank  straight-from-the-shoulder 
   
2. used of a knife or other blade; not sharp
   "a blunt instrument"
   blunt 
   
3. having a broad or rounded end
   "thick marks made by a blunt pencil"
   blunt 
   
4. devoid of any qualifications or disguise or adornment
   "the blunt truth"; "the crude facts"; "facing the stark reality of the deadline"
   blunt  crude  stark