Dictionary.com
Thesaurus.com
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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But observers say it could benefit in the future from Fed struggles to rein in prices.

From Barron's Sep. 16, 2026

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

From BBC Sep. 15, 2026

Voters in a handful of Republican-voting states are poised to soon decide on whether to rein in their property bills.

From The Wall Street Journal Sep. 6, 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

Finally Baelish drew rein in front of a ramshackle building, three stories, timbered, its windows bright with lamplight in the gathering dusk.

From "A Game of Thrones" by George R.R. Martin

Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training