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fundamental

nounadjectivecommon in dialogue

  • Canada//ˌfʌn.dəˈmɛn.təl//
  • Canada/[fʌn.dəˈmɛn.tɫ̩]/
  • Australia//ˌfɐn.dəˈmen.təl//
  • Australia/[fɐn.dəˈmen.tɫ̩]/

A basic truth, elementary concept, principle, rule, or law. An individual fundamental will often serve as a building block used to form a complex idea.

noun

  1. 1

    A basic truth, elementary concept, principle, rule, or law. An individual fundamental will often serve as a building block used to form a complex idea.

    Personal leadership is a fundamental of successful government.

  2. 2

    A collection of essential component ideas that are often grouped together to serve as the foundational basis of a complex idea.

    one of the fundamentals of linear algebra

    When any one offers me a compleat Catalogue of his Fundamentals, he does not unreaſonably demand me to quit mine for nothing[…]

    Absolute or Ultimate Truth... may be for ever unattainable... the fundamentals of to-day... may in the fullness of time be displaced by still more fundamental conceptions.

  3. 3

    The lowest frequency of a periodic waveform.

  4. 4

    The lowest partial of a complex tone.

Etymology

From Late Latin fundamentālis, from Latin fundamentum (“foundation”), from fundō (“to lay the foundation (of something), to found”), from fundus (“bottom”), from Proto-Indo-European *bʰudʰmḗn.

adjective

  1. 1

    Related to a foundation, base, or basis; serving as a foundation.

  2. 2

    Essential; extremely important.

    a fundamental truth; a fundamental axiom; a fundamental element; fundamental principle; fundamental law

    A need for belonging seems fundamental to humans.

    Seeing the British establishment struggle with the financial sector is like watching an alcoholic […]. Until 2008 there was denial over what finance had become. […] But the scandals kept coming, […]. A broad section of the political class now recognises the need for change but remains unable to see the necessity of a fundamental overhaul. Instead it offers fixes and patches.

Forms

plural
fundamentals
comparative
more fundamental
superlative
most fundamental
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).