Word of the Day · October 31, 2026
mercurial
- mer-KYUR-ee-ul · adjective
- Subject to sudden or unpredictable changes of mood or mind.
- “Investors remain cautious due to the CEO's mercurial leadership style.”
- Origin: From Latin 'mercurialis' from 'Mercurius' (Mercury), Roman god known for eloquence and swiftness.
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