1. Made dull or blunt
   "The blunted knife was useless for cutting vegetables";
   - dulled

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

See also: dull

Type of: alter, change, desensitise [Brit], desensitize, modify, weaken

Antonym: liven, sharpen

Encyclopedia: Blunt, Peter