Third-person singular simple present indicative form of rile.(verb)
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Use "riles" in a sentence
"Palin riles up her supporters to “take the country back.”"
"They're calling it an earmark, a word that riles emotions in a time when Republicans and Democrats are trying to wring savings from the federal budget."
"Footnote UPDATE August 24 Commenter "riles" notes that the beer-bottle officer is not the same one who carried the rock."