Validatable refers to something that can be tested or verified as accurate or true. There are several synonyms for the word, including authenticate, confirm, certify, and verify. These words all suggest the act of providing proof or evidence to support a claim or idea. Other synonyms include corroborate, substantiate, and validate, which also indicate the need for verification or confirmation. Additionally, words like justified, warranted, and proven suggest that something has already been tested and found to be valid, while the term reliable implies confidence in the accuracy or trustworthiness of information. Overall, there are many words that can be used interchangeably with validatable, depending on the context and desired level of emphasis.