Simple past tense and past participle of roil.(verb)
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Use "roiled" in a sentence
"McCain roiled things yesterday, and I think set things back."
"In an interview with Baltimore Sun columnist David Zurawik, Williams said he remains emotionally "roiled" by the incident and said, despite being hired full-time by Fox News with a three-year, $2 million contract, "there's an emotional disconnect, because the way it feels to me is like I just got fired and I'm not even sure what I did wrong.""
"Politico reports that the possibility has "roiled" Obama-land, with unnamed Obama-ites expressing "a sense of ambivalence about giving a top political plum to a woman they spent 18 months hammering as the compromised standard-bearer of an era that deserves to be forgotten.""