validation

noun

val·​i·​da·​tion ˌva-lə-ˈdā-shən 

: an act, process, or instance of validating

especially : the determination of the degree of validity of a measuring device

Synonyms of validation

• evidence
• proof
• testimony
• documentation
• testament
• confirmation

Examples of validation in a Sentence

I'm afraid we cannot act on your claim without validation.

Recent Examples on the Web

Successful validation Sodium is cheap, abundant, and chemically similar to lithium. — Mrigakshi Dixit, Interesting Engineering, 27 Aug. 2026

Commentators hungry for superstar validation of their culture war were calling her silence a moral failure, and some of them were the same people who, in previous news cycles, had insisted that athletes needed to shut up. — Jerry Brewer, New York Times, 26 Aug. 2026

Shoppers who spent at least $100 at the mall received a parking validation for up to three hours. — Jessica Guynn, USA Today, 26 Aug. 2026

In many ways, her life feels like a bleak look at the false promise of placing all of your need for validation in your husband. — Shamira Ibrahim, Vulture, 24 Aug. 2026

Word History

Etymology

valid(ate) + -ation, perhaps after French validation

First Known Use

circa 1656, in the meaning defined above

Phrases Containing validation

• self-validation

Rhymes for validation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation