Validation synonyms such as acknowledgment, acceptance, and accreditation. Validation is a noun, and its antonyms are rejection and disapproval. Additionally, here are 31 synonyms, related words, and verbs for validation.
Acceptance, Accreditation, Acknowledgment, Affirmation, Affirming, Approval, Approval process, Authentication, Authorization, Backing, Certification, Confirmation, Corroboration, Documentation, Endorsement, Evidence, Justification, Legitimation, Legitimation, Proof, Ratification, Reassurance, Recognition, Reinforcement, Sanction, Sign-off, Substantiation, Support, Testing, and Verification.