The Collaborative International Dictionary
Supportably
Supportable \Sup*port"a*ble\, a. [Cf. F. supportable.] Capable of being supported, maintained, or endured; endurable. -- Sup*port"a*ble*ness, n. -- Sup*port"a*bly, adv.
Wiktionary
supportably
adv. In a supportable manner.