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quicksilver

DEFINITIONS OF: quicksilver

1

n a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures

Synonyms:
Hg, atomic number 80, hydrargyrum, mercury
Type of:
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.

adj liable to sudden unpredictable change

“a quicksilver character, cool and willful at one moment, utterly fragile the next”
Synonyms:
erratic, fickle, mercurial
changeable, changeful
such that alteration is possible; having a marked tendency to change
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