The Collaborative International Dictionary
Affirmable
Affirmable \Af*firm"a*ble\, a. Capable of being affirmed, asserted, or declared; -- followed by of; as, an attribute affirmable of every just man.
Wiktionary
affirmable
a. Able to be affirmed.
WordNet
affirmable
adj. capable of being affirmed or asserted; "a quality affirmable of every member of the family" [syn: assertable]