What is the quality or state of being inconstant; want of constancy; mutability; fickleness; variableness. For unto knight there was no greater shame, Than lightness and inconstancie in love. Spenser called?

inconstancy — The quality or state of being inconstant; want of constancy; mutability; fickleness; variableness. For unto knight there was no greater shame, Than lightness and inconstancie in love. Spenser. (Webster's 1913.)

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