certified
Americanadjective
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having or proved by a certificate.
a certified representative.
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guaranteed; reliably endorsed.
a certified check.
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legally declared insane.
-
committed to a mental institution.
adjective
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holding or guaranteed by a certificate
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endorsed or guaranteed
a certified cheque
-
(of a person) declared legally insane
Other Word Forms
- noncertified adjective
- uncertified adjective
- well-certified adjective
Etymology
Origin of certified
Explanation
If you've met a certain standard or proven that you're qualified for some specific job or task, you're certified. Most schools hire only certified teachers. In order for a person to become certified, there is usually some sort of test or review. A certified accountant has proven that she knows how to prepare tax forms and other financial records by taking classes and an exam. A certified diver has trained to use scuba gear and dive to a certain depth in the ocean, and demonstrated this ability. When you're certified in some way, you often receive a certificate, a document that proves it.
Vocabulary lists containing certified
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.
“I don’t have a scientific certified document, but that’s information that we get,” he said.
From The Wall Street Journal • Apr. 23, 2026
Boeing expects the 737-7 and 737-10 to be certified for commercial service in 2026.
From Barron's • Apr. 21, 2026
Loganair, Scotland's largest regional airline, has signalled it wants to deploy hydrogen-powered aircraft once certified.
From BBC • Apr. 21, 2026
“This is my last year playing but I’ve been wanting to transition more into coaching,” said Gamble, a certified personal trainer and fitness instructor who started a business 10 years ago called The Jazz Standard.
From Los Angeles Times • Apr. 18, 2026
Sixty-one percent had no full-time certified arts teacher.
From "Drama High" by Michael Sokolove
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
