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

Extensive design iterations, airworthiness certification, and manufacturing validation requirements make the path to mass production longer and more complex, resulting in a gradual ramp-up in deliveries. —Bojan Stojkovski, Interesting Engineering, 7 June 2026

Neediness is a never-ending hunger for external validation that no response ever satisfies. —Sabrina Romanoff, CNBC, 5 June 2026

Your celestial ruler, Venus, will also oppose Pluto retrograde, stirring intensity around romance, friendship and validation. —Valerie Mesa, PEOPLE, 4 June 2026

Regulatory bodies increasingly expect documentation that demonstrates validation testing, bias mitigation protocols, and explainable outputs. —Ethan Stone june 3, Fort Worth Star-Telegram, 3 June 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