mercurial

  • (s) liable to sudden unpredictable change
    • erratic behavior
    • fickle weather
    • mercurial twists of temperament
    • a quicksilver character, cool and willful at one moment, utterly fragile the next
    erratic, quicksilver, fickle,
  • (a) relating to or under the (astrological) influence of the planet Mercury
    • the Mercurial canals
  • (a) relating to or having characteristics (eloquence, shrewdness, swiftness, thievishness) attributed to the god Mercury
    • more than Mercurial thievishness
  • (a) relating to or containing or caused by mercury
    • mercurial preparations
    • mercurial sore mouth

Synonyms

erratic quicksilver fickle

Words of close approximity

mercuric
Mercurialis Mercurialis annua Mercurialis perennis mercurial ointment