blunt
candid
forthright
frank
free-spoken
outspoken
plainspoken
point-blank
straight-from-the-shoulder
characterized by directness in manner or speech; without subtlety or evasion
blunt talking and straight shooting
a blunt New England farmer
I gave them my candid opinion
forthright criticism
a forthright approach to the problem
tell me what you think — and you may just as well be frank
it is possible to be outspoken without being rude
plainspoken and to the point
a point-blank accusation