Unconstancy
Pronunciation : Un*con"stan*cy
Part of Speech : n.
Definition : Defn: Inconstancy. [Obs.] "The unconstancy of the foundation." Fuller.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder