“The inconstancy of the stock market kept investors on edge as prices continued to rise and fall unpredictably.”

“His inconstancy shattered her trust and left her heartbroken.”

“They excel in fickleness, inconstancy, absence of thought and logic and incapacity to reason.”

“The literal navigation of terrains results in disruption and inconstance.”

“Actually, while this is a nice mix it does display a few inconstancies in the way of dynamic range and channel separation.”