IMPROBABLE a.
Not probable; unlikely to be true; not to be expected under the circumstances or in the usual course of events; as, an improbable story or event. He . . . sent to Elutherius, then bishop of Rome, an improbable letter, as some of the contents discover. Milton. -- Im*prob"a*ble*ness, n. -- Im*prob"a*bly, adv.…
UNLIKE a.
Not likely; improbable; unlikely. [Obsoles.] Unlike quantities (Math.), quantities expressed by letters which are different or of different powers, as a, b, c, a2, a3, xn, and the like. -- Unlike signs (Math.), the signs plus (+) and minus (-).