English Lexicon

Mercurial

/mɜːrˈkjʊəriəl/
adjectivenounCEFR C1 (Advanced)Top #1500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Subject to sudden or unpredictable changes of mood or mind.

    "Her mercurial temperament made it difficult for her friends to predict her reactions."
As noun
  1. 1

    A person who is subject to sudden or unpredictable changes of mood.

    "He was known as a mercurial, often leaving his colleagues guessing about his next move."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'mercurial' originates from the Latin word 'mercurialis', which means 'of Mercury'. Mercury, the Roman god of commerce and communication, was known for his swift and changeable nature, which influenced the word's evolution to describe someone or something that is volatile or changeable in temperament.

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