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Word of the Day Tuesday, June 9, 2026

mercurialist

/mɜːrˈkjʊəriəlɪst/ noun · British & US
Valid in UK
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What does mercurialist mean?

noun

A person who studies or writes about the planet Mercury, or a person who is changeable or unpredictable in their moods or behavior.

Example

"The astronomer was a renowned mercurialist, known for her groundbreaking research on the planet's orbit."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for mercurialist

Antonyms of mercurialist

Rhymes with mercurialist

Etymologically related