Webster’s Revised Unabridged Dictionary · 1913
Vagary
Va·ga′ry (vȧ·gā′ry̆), n.; pl. Vagaries (#). [L. vagari to stroll about. See Vague.]
1. A wandering or strolling. [Obs.]
2. Hence, a wandering of the thoughts; a wild or fanciful freak; a whim; a whimsical purpose. "The vagaries of a child." Spectator.
They changed their minds, Flew off, and into strange vagaries fell. Milton.