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Added 9 October 2026

roil

/ˈɹɔɪl/ verb

Latin root: robigo Wiktionary

verb Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about roil at Wordnik → Where our words come from →

Be agitated.
the sea was churning in the storm
Make turbid by stirring up the sediments of.

Origin

Origin uncertain. Possibly from French or Middle French rouiller (“to rust, make muddy”), from Old French rouil (“mud, rust”), from Vulgar Latin *robicula, from Latin robigo (“rust, blight”)

From Wiktionary, via Kaikki.org (CC BY-SA)

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