[ fuhn-duh-men-tl ]
/ ˌfʌn dəˈmɛn tl /


serving as, or being an essential part of, a foundation or basis; basic; underlying: fundamental principles; the fundamental structure.
of, relating to, or affecting the foundation or basis: a fundamental revision.
being an original or primary source: a fundamental idea.
Music. (of a chord) having its root as its lowest note.


Origin of fundamental

1400–50; late Middle English < Medieval Latin fundāmentālis of, belonging to a foundation. See fundament, -al1

OTHER WORDS FROM fundamental Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for fundamentally

British Dictionary definitions for fundamentally (1 of 2)

/ (ˌfʌndəˈmɛntə) /


in a way that affects the basis or essentials; utterlythe terms of engagement have been fundamentally altered
(sentence modifier) in essence; at heartfundamentally, we want our lives to be safe

British Dictionary definitions for fundamentally (2 of 2)

/ (ˌfʌndəˈmɛntəl) /


of, involving, or comprising a foundation; basic
of, involving, or comprising a source; primary
music denoting or relating to the principal or lowest note of a harmonic series
of or concerned with the component of lowest frequency in a complex vibration


Derived forms of fundamental

fundamentality or fundamentalness, noun
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