Noah Webster
Fickle
FICK'LE, adjective [Latin vacillo; Gr.; Heb. to stagger.]
1. Wavering; inconstant; unstable; of a changeable mind; irresolute; not firm in opinion or purpose; capricious.
They know how fickle common lovers are.
2. Not fixed or firm; liable to change or vicissitude; as a fickle state.