to render (water, wine, etc.) turbid by stirring up sediment.
to disturb or disquiet; irritate; vex: to be roiled by a delay.
to move or proceed turbulently.
- un·roiled, adjective
- roil , royal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use roil in a sentence
The roiling mass of convection, or shower and thunderstorm activity, has recently acquired more spin, an indication that a center of low pressure is developing.A strong hurricane is forecast to strike the Gulf Coast by Monday | Matthew Cappucci, Jason Samenow | August 26, 2021 | Washington Post
The most significant is that it would stabilize part of the interior against convective heat, which otherwise would roil Saturn’s insides with turbulence.
Videos produced by Becher’s team show exactly how air comes out of different instruments, in what looks like roiling puffs of smoke.What science tells us about reducing coronavirus spread from wind instruments | Betsy Ladyzhets | August 6, 2021 | Science News
Neither is absorbing blame for some of the quality-of-life issues roiling California, like homelessness and energy costs.The Trailer: Who sponsored this message? Why you're seeing so many ads so far from the midterms. | David Weigel | July 29, 2021 | Washington Post
Smith’s comments about Ohtani and the blowback to them came a little more than a week after ESPN was roiled by a leaked video of Rachel Nichols, a host of the network’s NBA coverage, making disparaging comments about colleague Maria Taylor.After Stephen A. Smith’s rant about Shohei Ohtani, his ESPN co-workers led the pushback | Ben Strauss | July 13, 2021 | Washington Post
And contemporaneous observers predicted that South Africa would fracture, that a civil war would roil for the next decade.Nelson Mandela Was Undeniably Great But He Doesn’t Need a Halo | Michael Moynihan | December 6, 2013 | THE DAILY BEAST
Like it or not, ethnicity, assimilation and wages are the same the currents that roil immigration.Supreme Court on Gay Marriage, Voting Rights, and More | Lloyd Green | June 23, 2013 | THE DAILY BEAST
A year after the fall of Col. Muammar Gaddafi, violence continues to roil Libya, heightening fears that the revolution could fail.
The poet Mary Oliver tells us to row, row into the swirl and roil.David McCullough at Wellesley Commencement: ‘You Are Not Special’ (Video) | The Daily Beast | June 9, 2012 | THE DAILY BEAST
And markets in the U.K., Germany, France, Spain, Japan, and China continue to roil.Mark McKinnon: Why the Euro Crisis Matters to Americans | Mark McKinnon | June 7, 2012 | THE DAILY BEAST
So saying, he drew a thick roil of documents from beneath his pillow, and placed it in his son's hands.The Knight Of Gwynne, Vol. II (of II) | Charles James Lever
The house being near the head, there will not water enough get into the spring, in any storm, to roil the water.Soil Culture | J. H. Walden
He said boast an roil, an he meant roast an boil em, didnt he?The Bobbsey Twins at Cedar Camp | Laura Lee Hope
There we should find the slanderous Blacow, and at the head of the muster-roil might be placed Slop.Pamphlets and Parodies on Political Subjects | William Hone
I know you told me not to roil round and so forth, but I knew you didn't mean it.The Little Warrior | P. G. Wodehouse
British Dictionary definitions for roil
(tr) to make (a liquid) cloudy or turbid by stirring up dregs or sediment
(intr) (esp of a liquid) to be agitated or disturbed
(intr) dialect to be noisy or boisterous
(tr) another word (now rare) for rile (def. 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012