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Definitions

quicksilver

[kwik-sil-ver] / ˈkwɪkˌsɪl vər /
ADJECTIVE
fickle
Synonyms
STRONGEST
capricious changeable flighty temperamental unpredictable unstable volatile
WEAK
arbitrary cheating coquettish double-crossing faithless fitful frivolous inconstant irresolute lubricious mercurial mutable sneaking ticklish two-timing unfaithful unsteady untrue variable whimsical yo-yo
Antonyms
STRONGEST
constant stable steadfast steady
WEAK
aware cognizant faithful reliable
ADJECTIVE
mercurial
Synonyms
STRONGEST
changeable effervescent erratic impulsive resilient unpredictable volatile
WEAK
blowing hot and cold bubbleheaded buoyant capricious elastic expansive fickle flaky flip fluctuating gaga gay inconstant irregular irrepressible lighthearted lively lubricious mad mobile movable spirited sprightly ticklish unstable up-and-down variable yo-yo
Antonyms
STRONGEST
certain constant predictable reliable stable steady sure unchanging
WEAK
calm tranquil unchangeable unperturbable unvarying

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But after that, Carpenter’s quicksilver timing and ease, plus a diverse set of sketches, put the episode over the top.

From Los Angeles Times • Oct. 19, 2025

That combination of hard-running forward and quicksilver backs, connecting with superb handling skills, was in evidence again and again.

From BBC • Sep. 13, 2025

"Christian Cullen," Halse said, referencing the quicksilver All Black full-back who scored 46 tries in 58 Tests for New Zealand.

From BBC • Sep. 5, 2025

Also known as quicksilver, mercury is a neurotoxin that can affect the nervous system and kidneys, according to the Centers for Disease Control and Prevention.

From Los Angeles Times • May 1, 2025

It wriggled and squirmed like quicksilver and, apart from that, the box was only just long enough to take it.

From "Matilda" by Roald Dahl

Vocabulary lists containing quicksilver

The Adventures of Huckleberry Finn

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Incidents in the Life of a Slave Girl

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"Coming of Age in the Dawnland," Vocabulary from the historical excerpt

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!