confirmatory

adjective

con·​fir·​ma·​to·​ry kən-ˈfər-mə-ˌtȯr-ē How to pronounce confirmatory (audio)
Synonyms of confirmatorynext
: serving to confirm : corroborative
a confirmatory test

Examples of confirmatory in a Sentence

a confirmatory test for pregnancy
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
While Denali is conducting a phase 2/3 trial to confirm clinical benefit in a larger cohort of patients, including participants up to age 26, these confirmatory trials can take years to complete. Nathan Grant, STAT, 14 Apr. 2026 In 2020: The Food and Drug Administration no longer required the Centers for Disease Control and Prevention to conduct confirmatory testing for positive COVID-19 diagnoses. Arizona Republic, AZCentral.com, 12 Mar. 2026 More frequently, though, my winter surprises have been confirmatory rather than revelatory. Daniel Fienberg, HollywoodReporter, 24 Feb. 2026 The bill would limit adverse employment actions by public employers based solely on a traditional confirmatory urine test that detects marijuana metabolites long after any impairment has ended. Alonzo Martinez, Forbes.com, 13 Feb. 2026 See All Example Sentences for confirmatory

Word History

First Known Use

1636, in the meaning defined above

Time Traveler
The first known use of confirmatory was in 1636

Browse Nearby Words

Cite this Entry

“Confirmatory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/confirmatory. Accessed 1 May. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster