• Mercurial Definition & Synonyms

  1. (n.) A person having mercurial qualities.
  2. (a.) Of or pertaining to, or containing, mercury; as, mercurial preparations, barometer. See Mercury, 2.
  3. (a.) Of or pertaining to Mercury as the god of trade; hence, money-making; crafty.
  4. (a.) Having the qualities fabled to belong to the god Mercury; swift; active; sprightly; fickle; volatile; changeable; as, a mercurial youth; a mercurial temperament.
  5. (n.) A preparation containing mercury.
  6. (a.) Caused by the use of mercury; as, mercurial sore mouth.
  7. (a.) Having the form or image of Mercury; -- applied to ancient guideposts.

Erratic, Fickle, Quicksilver,

• Mercurialism Definition & Synonyms

  1. (n.) The morbid condition produced by the excessive use of mercury, or by exposure to its fumes, as in mining or smelting.

• Mercurialize Definition & Synonyms

  1. (v. t.) To treat with mercury; to expose to the vapor of mercury.
  2. (v. i.) To be sprightly, fantastic, or capricious.
  3. (v. t.) To affect with mercury.