ETYMOLOGY
from French discutable,
from discuter (to discuss),
(from Latin discutere (to discuss) + -able)
EXAMPLE
“… A definite and complete study of all literary works of the period inspired by the event would be not only an enterprise worthy of an inquisitive erudition, but also a useful help in tracing a line of demarcation between legend and history, and would throw a flood of light on many insoluble or discutable points. …”
From: The Saturday Review of Politics, Literature, Science and Art, 1893
Christopher Columbus and Lope de Vega
Lexicophilia 