Inconstant In*con"stant, a. [L. inconstans: cf. F. inconstant. See {In-} not, and {Constant}.] Not constant; not stable or uniform; subject to change of character, appearance, opinion, inclination, or purpose, etc.; not firm; unsteady; fickle; changeable; variable; -- said of persons or things; as, inconstant in love or friendship. ``The inconstant moon.'' --Shak. [1913 Webster]

While we, inquiring phantoms of a day, Inconstant as the shadows we survey! --Boyse.

Syn: Mutable; fickle; volatile; unsteady; unstable; changeable; variable; wavering; fluctuating. [1913 Webster]

The Collaborative International Dictionary of English. 2000.