- mercurial⇄adj. 1a. sprightly and animated; quick.
Ex. I was ardent in my temperament; quick, mercurial, impetuous (Washington Irving).
(SYN) agile.
b. changeable; fickle.
Ex. mercurial breezes. Mercurial currency exchange rates are provin - mercurial⇄adv. mercurially.
- mercurial⇄mercurial, adjective, noun.
- mercurial⇄noun a drug containing mercury.
- mercurial⇄noun mercurialness.