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1. Making less susceptible or sensitive to either physical or emotional stimuli
   - desensitizing

1. Cause not to be sensitive
   "The war desensitised many soldiers"; "The photographic plate was desensitised"
   - desensitize
    
2. Make insensitive
   "His military training desensitised him"
   - desensitize

See also: desensitisation [Brit], numbing, predisposition, sensitivity

Type of: alter, change, modify

Antonym: sensitise [Brit]