The state or quality of being eccentrically variable or fickle.(noun)
An instance of being eccentrically variable or fickle.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "inconstancy" in a sentence
"Would you call it inconstancy on their part to seek it wherever it might be found?"
"Such people deserve no pity; for, after all, inconstancy is unpardonable."
"The world, as it has been, is and will be constant in inconstancy; for"