Definify.com
Webster 1913 Edition
Maintainable
Main-tain′a-ble
,Adj.
That may be maintained.
Webster 1828 Edition
Maintainable
MAINTA'INABLE
,Adj.
1.
That may be defended or kept by force or resistance; as, a military post is not maintainable.2.
That may be defended by argument or just claim; vindicable; defensible.