Meaning : Liable to sudden unpredictable change.
Example :
Erratic behavior.
Fickle weather.
Mercurial twists of temperament.
A quicksilver character, cool and willful at one moment, utterly fragile the next.
Synonyms : erratic, fickle, quicksilver
Meaning : Relating to or under the (astrological) influence of the planet Mercury.
Example :
The Mercurial canals.
Meaning : Relating to or having characteristics (eloquence, shrewdness, swiftness, thievishness) attributed to the god Mercury.
Example :
More than Mercurial thievishness.
Meaning : Relating to or containing or caused by mercury.
Example :
Mercurial preparations.
Mercurial sore mouth.