- mercurial
- a.
1.Sprightly, active, spirited, quick, lively, prompt, nimble.2.Light-hearted, gay, lively, cheerful.3.Flighty, fickle, changeable, inconstant, volatile, mobile.4.Money-making, commercial, trading, crafty.5.Of mercury or quicksilver, hydrargyrum.6.Directing, pointing out, giving intelligence, guiding.
New dictionary of synonyms. 2014.