In·con·stant a. 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.”
While we, inquiring phantoms of a day,
Inconstant as the shadows we survey! --Boyse.
Syn: -- Mutable; fickle; volatile; unsteady; unstable; changeable; variable; wavering; fluctuating.
adj : likely to change frequently often without apparent or cogent
reason; variable; "inconstant affections"; "an
inconstant lover"; "swear not by...the inconstant
moon"- Shakespeare [ant: constant]