blunt

sense 1: make less intense; "blunted emotions"
blunt

sense 2: make numb or insensitive; "The shock numbed her senses"
numb benumb blunt dull

sense 3: make dull or blunt, as of sharp edges or knives' blades
dull blunt

sense 4: make less sharp; "blunt the knives"
blunt

sense 5: make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation; "Terror blunted her feelings"; "deaden a sound"
deaden blunt