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Synonyms

confirmatory

American  
[kuhn-fur-muh-tawr-ee] / kənˈfɜr məˌtɔr i /
Also confirmative

adjective

  1. serving to confirm; corroborative.


Other Word Forms

  • nonconfirmative adjective
  • nonconfirmatory adjective
  • unconfirmative adjective
  • unconfirmatory adjective

Etymology

Origin of confirmatory

1630–40; < Medieval Latin confirmātōrius, equivalent to Latin confirmā ( re ) ( confirm ) + -tōrius -tory 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.

“This count reflects only the animals that have gone through sampling and confirmatory testing in multiple labs,” she said.

From Los Angeles Times • Mar. 12, 2026

In February, the FDA Commissioner unveiled a new default position that just one “adequate and well-controlled” study combined with confirmatory evidence will underpin marketing authorization of novel products.

From The Wall Street Journal • Mar. 10, 2026

But in 2022, it said it would withdraw the drug after it failed External link a required confirmatory trial.

From Barron's • Oct. 24, 2025

"I think the urgency and importance of doing the confirmatory work can't be overstated."

From Science Daily • Oct. 19, 2025

“Of course not” laughed Robert “Of course not” echoed Mariequita, with a serious, confirmatory bob of the head.

From "The Awakening" by Kate Chopin