Dictionary.com
Thesaurus.com

insurer

American  
[in-shoor-er, -shur-] / ɪnˈʃʊər ər, -ˈʃɜr- /

noun

  1. a person or company that contracts to indemnify another in the event of loss or damage; underwriter.

  2. a person or thing that insures.

  3. a person who sells insurance.


insurer British  
/ -ˈʃɔː-, ɪnˈʃʊərə /

noun

  1. a person or company offering insurance policies in return for premiums

  2. a person or thing that insures

"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

Etymology

Origin of insurer

First recorded in 1645–55; insure + -er 1

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.

The Department of Insurance announced Monday it filed an administrative action against the state’s largest home insurer after an investigation into 220 sample claims found 398 violations of state law in about half of them.

From Los Angeles Times • May 4, 2026

There are its namesake drugstores, but also pharmacy-benefits manager Caremark, insurer Aetna, primary-care center Oak Street Health, and in-home services provider Signify Health.

From Barron's • Apr. 30, 2026

As the family grappled with the devastating news, they also found out Sienna's travel insurance would be void due to her condition, and a suitable insurer would now cost more than £5,000.

From BBC • Apr. 28, 2026

My insurer paid more than the cash rate, and the company was still seeking another $400 from me.

From Slate • Apr. 25, 2026

Time, patient name, insurer, admitting doctor, room number.

From "Things Not Seen" by Andrew Clements