Unlike
Pronunciation : Un*like"
Part of Speech : a.
Definition : 1. Not like; dissimilar; diverse; having no resemblance; as, the cases are unlike.
2. 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 (-).
Source : Webster's Unabridged Dictionary, 1913