The word certifiably is used to describe something that has been officially recognized or confirmed in some way. Synonyms for this word can include certified, verified, authenticated, confirmed, established, and validated. These words all convey a sense of credibility and certainty, indicating that the information or status in question has been thoroughly vetted and verified. Other synonyms for certifiably might include corroborated, substantiated, attested, substantiated, or proven. These words all convey a similar sense of official recognition and validation. Whatever synonym is used, it is clear that the word certifiably is an important qualifier of truth and accuracy in various contexts.