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ˌfundaˈmentally

British  
/ ˌfʌndəˈmɛntəlɪ /

adverb

  1. in a way that affects the basis or essentials; utterly

    the terms of engagement have been fundamentally altered

  2. (sentence modifier) in essence; at heart

    fundamentally, we want our lives to be safe
"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

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.