The Collaborative International Dictionary of English v.0.48:

Bluntly \Blunt"ly\, adv.
   In a blunt manner; coarsely; plainly; abruptly; without
   delicacy, or the usual forms of civility.
   [1913 Webster]

         Sometimes after bluntly giving his opinions, he would
         quietly lay himself asleep until the end of their
         deliberations.                           --Jeffrey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bluntly
    adv 1: in a blunt direct manner; "he spoke bluntly"; "he stated
           his opinion flat-out"; "he was criticized roundly" [syn:
           bluffly, bluntly, brusquely, flat out, roundly]