The Collaborative International Dictionary
Obligable
Obligable \Ob"li*ga*ble\, a. Acknowledging, or complying with, obligation; trustworthy.
The main difference between people seems to be, that
one man can come under obligations on which you can
rely, -- is obligable; and another is not.
--Emerson.
Wiktionary
obligable
a. Acknowledging, or complying with, obligation; trustworthy.