We have put together a list of words that are similar to VALIDATION.

10 Alternative Words Similar to validation

1 Proof Noun      Synonym Words Like Proof
3 Establishment Noun      Synonym Words Like Establishment
4 Determination Noun      Synonym Words Like Determination
5 Finding Noun      Synonym Words Like Finding
6 Monetization Noun      Hyponym
7 Monetisation Noun      Hyponym
8 Support Noun      Hyponym Words Like Support
9 Probate Noun      Hyponym
10 Documentation Noun      Hyponym Words Like Documentation

7 definitions of validation

1 The act of giving validity.
2 the act of validating; finding or testing the truth of something
3 the cognitive process of establishing a valid proof
4 The act of giving validity; a strengthening, inforcement, or confirming; an establishing or ratifying. Blount, Glossographia (1670).
5 The act of validating something.
6 Something, such as a certificate, that validates something; attestation, authentication, confirmation, proof or verification.
7 The process whereby others confirm the validity of one's emotions.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide