adj · noun · verb · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
US:kwĭk'sĭlvər
US:/ˈkwɪkˌsɪlvɚ/
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:K W IH1 K S IH1 L V ER0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Unpredictable, erratic, or fickle; mercurial.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
verb
Meaning 4
To overlay with quicksilver.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
verb
Meaning 5
To treat with quicksilver.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: mercury, hydrargyrum, Hg, atomic number 80
Antonyms: none provided
Broader terms: metallic element, metal
History
Etymology
From Middle English quyk silver, quyksilver, quikselver, from Old English cwicseolfor (“quicksilver”, literally “living silver”) (see Latin argentum vīvum) from its ability to move. See quick in the sense of "living". Cognate with Dutch kwikzilver, German Low German Quicksülver, German Quecksilber, Danish kviksølv, Norwegian Bokmål kvikksølv, Swedish kvicksilver. By surface analysis, quick (“living”) + silver.
Across languages
Translations
58 source translations are retained for this English entry.