This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The act of validating something.

n. Something, such as a certificate, that validates something; attestation, authentication, confirmation, proof or verification.

n. The process whereby others confirm the validity of one's emotions.

n. The act of giving validity.

n. The act of giving validity; a strengthening, inforcement, or confirming; an establishing or ratifying. Blount, Glossographia (1670).

n. the act of validating; finding or testing the truth of something

n. the cognitive process of establishing a valid proof

"But I justify it by suggesting that implementing the title validation in every derived class creates undesirable duplicate code, and refactoring it to use the strategy pattern is overkill."

proof    cogent evidence   

Alsatian    Americanization    Appalachian    Balkanization    Christianization    Confederation    Corp.    Croatian    Dalmatian    Desegregation   

verification    authentication    calibration    audit    evaluation    implementation    authorization    optimization    caching    certification