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certifiably

American  
[sur-tuh-fahy-uhb-lee] / ˌsɜr təˈfaɪ əb li /

adverb

  1. in a way that meets official or certifiable standards.

  2. Informal. in a way or to a degree that suggests insanity or irrationality.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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