Run riot Meaning in English
expression
Definition
To behave in an uncontrolled or wild way, often causing trouble or a mess. Can also describe something (like feelings or imagination) that grows or spreads out of control.
Usage & Nuances
This is a British and somewhat formal/idiomatic expression. Used for people, animals, or abstract things (like imagination). Not used for machines or events. Often in negative contexts: 'let children run riot', 'imagination runs riot'. Avoid in US formal writing, but common in British English.
Example Sentences
When the teacher left, the students began to run riot.
basic
Don't let your imagination run riot when reading this story.
basic
After the party started, the kids ran riot in the backyard.
basic
If you give them too much sugar, they'll run riot all afternoon.
natural
Letting your worries run riot will only make you feel worse.
natural
Left unchecked, weeds will run riot in your garden.
natural