Quick definitions from WordNet (blunt)

▸ verb:  make less sharp ("Blunt the knives")
▸ verb:  make less intense ("Blunted emotions")
▸ verb:  make dull or blunt
▸ verb:  make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation ("Terror blunted her feelings")
▸ verb:  make numb or insensitive
▸ adjective:  having a broad or rounded end ("Thick marks made by a blunt pencil")
▸ adjective:  devoid of any qualifications or disguise or adornment ("The blunt truth")
▸ adjective:  characterized by directness in manner or speech; without subtlety or evasion ("Blunt talking and straight shooting")
▸ adjective:  used of a knife or other blade; not sharp ("A blunt instrument")
▸ name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3212)

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▸ Also see blunt