October 23, 2026

Mercurial

adjective

Definition

Subject to sudden or unpredictable changes of mood or mind; lively and clever. The word derives from the swift-moving planet Mercury.

Example Sentence

“Her mercurial temperament kept everyone around her alert — joyful one hour, furious the next.”

Etymology

From Latin mercurialis, of or pertaining to Mercury, messenger of the gods and patron of trade.

Scrabble Score

M3E1R1C3U1R1I1A1L1

MERCURIAL scores 13 points in Scrabble.

Synonyms & Related Words

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