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Synonyms

rein in

British  

verb

  1. (adverb) to stop (a horse) by pulling on the reins

"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

Example Sentences

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Amodei also said that any action to rein in AI should be done "without sacrificing commercial advantage".

From BBC Sep. 15, 2026

The United Nations rights chief called Monday for countries and artificial intelligence companies to act urgently to rein in a technology he warned posed "unprecedented risks".

From Barron's Sep. 14, 2026

Efforts to rein in the power of Big Tech extend beyond concerns that TikTok, Instagram and other social media platforms are harming young children.

From Los Angeles Times Sep. 1, 2026

President Emmanuel Macron’s government has struggled for years to rein in spending.

From The Wall Street Journal Aug. 27, 2026

“I know it is enjoyable to be out-of-doors, Beowulf, but you must try to rein in the howling, or you will get all the dogs in the county started—oh, my!”

From "The Unseen Guest" by Maryrose Wood

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