ˈtrēd.əbəl, -ētəb- adjective
Etymology: Middle English tretable, from Middle French traitable, from Latin tractabilis — more at tractable
1.
a. archaic : easily managed, handled, or dealt with : open to appeal or argument : docile , tractable
those arts by which the people were rendered more treatable — A.A.Cooper
b. obsolete : gentle and moderate rather than violent in nature
in France … changes of seasons are less treatable than they are with us — William Temple
2. : capable of being treated : yielding or responsive to treatment
treatable aluminum alloys
a treatable disease