blunt

[1]	numb , benumb
[2]	dull , take the edge off
[3]	soften , mitigate , mollify , soothe , efface , dim , obscure , blur , weaken
[4]	deaden

adj.

[1]	dull , worn
[2]	abrupt , curt , rough-spoken , plain-spoken , short , direct , candid , frank , unceremonious , undiplomatic , inconsiderate , thoughtless , brusque , outspoken , bluff , brash , indelicate , rude , uncivil , ungracious , discourteous , impolite , straightforward , straight , uncomplicated , uncompromising
[3]	forthright , free-spoken , plainspoken , point-blank , straight-from-the-shoulder
[4]	crude , stark