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

• attestation
• confirmation
• corroboration
• documentation
• evidence
• proof
• substantiation
• testament
• testimonial
• testimony
• voucher
• witness

Examples of validation in a Sentence

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

Recent Examples on the Web

This proactive validation is critical in healthcare, defense and finance, where AI failures can lead to life‑threatening or mission‑critical consequences. —Expert Panel®, Forbes.com, 17 June 2025

When an online influencer offers a sense of clarity, Roger dives headfirst into a digital echo chamber in search of meaning and validation. —Dave Quinn, People.com, 13 June 2025

Having political conversations on Love Is Blind, or allowing a Republican contestant on Love Island USA, isn’t validation of their philosophy. —Monique Wilson, Glamour, 12 June 2025

In general, people who struggle with low self-esteem or didn’t grow up feeling emotionally secure end up craving external validation and reassurance from others. —Jenna Ryu, SELF, 11 June 2025

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