adj. Capable of being avowed or openly acknowledged with confidence.
the GNU version of the Collaborative International Dictionary of English
adj. Capable of being avowed, or openly acknowledged, with confidence.
The Century Dictionary and Cyclopedia
Capable of being avowed or openly acknowledged with confidence.
Word Usage
"Moreover the chancellor of the exchequer saw before him an inevitable addition of ten millions of pounds sterling to his budget, the only avowable reason for which was the rectification of the Canadian frontier."