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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

Expect a similarly powerful forward pack, with some quicksilver runners and astute playmakers in the backline.

From BBC • Aug. 20, 2025

Music director and conductor Stephen Oremus maintained the production’s high musical standards, bringing out the extensive palette of a rock score with quicksilver moods.

From Los Angeles Times • Aug. 4, 2025

Because Bordeaux's backline, marshalled by the quicksilver Mathieu Jalibert and laced with the pace of Penaud and Louis Bielle-Biarrey, is the most dangerous in the competition off turnover ball and in broken field.

From BBC • May 24, 2025

All one has to do is to drive the quicksilver up and then it stays without falling again.

From "All Quiet on the Western Front: A Novel" by Erich Maria Remarque

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!