Definition of mercurial

Definition of mercurial
  1. mercurial Adjective Volatile; erratic; unstable; flighty; fickle or changeable in temperament.
  2. mercurial Adjective Lively; clever; sprightly; animated; quick-witted.
  3. mercurial Adjective Having characteristics attributed to the Shakespeare character Mercutio , such as volatile, erratic, unstable, and shrewdness.
  4. mercurial Adjective Of, or pertaining to the element mercury; containing mercury; caused by the action of mercury or quicksilver.
  5. mercurial Adjective Having characteristics attributed to the Roman god Mercury, such as swiftness, eloquence, shrewdness, and thievishness.
  6. mercurial Adjective (often capitalized, see "Mercurial") Of or pertaining to the Roman god Mercury.
  7. mercurial Adjective (often capitalized, see "Mercurial") Of or pertaining to the planet Mercury; under the supposed astrological influence of the planet Mercury.
  8. mercurial Noun A chemical containing mercury.
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