Mercurial meaning
Someone who can get mad in the blink of an eye is an example of someone who would be described as mercurial.
A mercurial nature.
Origin of mercurial
- Middle English of the planet Mercury from Latin mercuriālis of the god or planet Mercury from Mercurius Mercury
From American Heritage Dictionary of the English Language, 5th Edition
- From Anglo-Norman / Old French mercurial, and their source, Latin mercurialis, from Mercurius (“Mercury").
From Wiktionary