To roil means to stir up dirt or sand in water or liquid and make it cloudy. It often happens when wind or movement makes the water not clear.
The wind roiled the river water quickly.
Heavy rain roiled the muddy pond.
Roil also means to move in a rough, angry, or violent way. This can be used for water, people, or situations that are full of unrest or excitement.
Angry crowds roiled the city streets.
The sea roiled under the dark clouds.
Roil can mean to make someone feel upset or angry. It is used to describe strong emotional disturbance or confusion caused by events or words.
His rude words roiled her mind deeply.
Bad news roiled the calm atmosphere.
As a noun, roil means a situation full of trouble or confusion. It describes times when things are not calm or clear, often with problems or arguments.
There was much roil after the sudden news.
The company faced roil during the crisis.
Roil means to swirl or churn liquids strongly, mixing them so they become uneven or cloudy. It is used to describe mixing by force in liquids.
The machine roils the paint well.
Storm roiled the ocean's surface fast.
