certifiably

Adverb

certifiably (comparative more certifiably, superlative most certifiably)

1. With the potential for certification.
   • Was the accused at the time of the commission of the act with which he is charged, and before that time, laboring under such mental disease as to render him certifiably insane? […] He goes on to ask, How is a jury to determine whether a man is " certifiably insane?" How is any man to attach a...1894, The Medical and Surgical Reporter, volume 71, page 583
   • Must such a neighborhood or district maintain a certain percentage of certifiably ethnic residents to maintain its eligibility?1997, Robert E. Stipe, Antoinette Josephine Lee, The American Mosaic: Preserving a Nation's Heritage, page 277
2. Genuinely
   • The main purpose for California Certified Organic Farmers is to certify that the products that growers are selling are certifiably organic1990 June, Orange Coast Magazine, volume 16, number 6, page 114
3. To a great extent.
   • He is certifiably nuts
   • Due mostly to his latest creation, the whacked-out Guggenheim branch that opened this fall in Bilbao, Spain, the 68-year-old Gehry has gone from being tagged the scary cousin in architecture's dysfunctional family to being certifiably huge.1998 January, SPIN, volume 14, number 1, page 42

   Synonyms:

   insanely

4. Undoubtedly, demonstrably.
   • The Tofu Cheesecake Bake-Off, which ten daring bakers had entered, was a special event held mid-week. It was, certifiably, the world's first such tofu pie contest1981 December, Vegetarian Times, number 52, page 74
   • You can get a long way into the Presley or Lennon mythology before you have to worry about the way these certifiably electric personalities dealt with the vocal problems of a particular phrase1981 February 23, New York Magazine, volume 14, number 8, page 47