• synonyms


[sur-tuh-fahy-uh-buh l, sur-tuh-fahy-]
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  1. capable of being certified.
  2. legally committable to a mental institution.
  3. Sometimes Facetious. fit or ready for an insane asylum.
  4. uncontrollable; insane: a certifiable desire.

Origin of certifiable

First recorded in 1840–50; certify + -able
Related formscer·ti·fi·a·ble·ness, nouncer·ti·fi·a·bly, adverbun·cer·ti·fi·a·ble, adjectiveun·cer·ti·fi·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for certifiably


  1. capable of being certified
  2. fit to be certified as insane
Derived Formscertifiably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for certifiably



1846, from certify + -able. Meaning "so deranged as to be certifiably insane" is recorded from 1912.

Online Etymology Dictionary, © 2010 Douglas Harper

certifiably in Medicine


  1. That can or must be certified. Used of infectious, industrial, and other diseases that are required by law to be reported to health authorities.
  2. Relating to or being a person showing disordered behavior of sufficient gravity to justify involuntary mental hospitalization.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.