Dictionary.com
Thesaurus.com
Synonyms

foundation

American  
[foun-dey-shuhn] / faʊnˈdeɪ ʃən /

noun

foundations plural
  1. the basis or groundwork of anything.

    the moral foundation of both society and religion.

  2. the natural or prepared ground or base on which some structure rests.

    Synonyms:
    footing
    Antonyms:
    superstructure
  3. the lowest division of a building, wall, or the like, usually of masonry and partly or wholly below the surface of the ground.

    Synonyms:
    footing
    Antonyms:
    superstructure
  4. the act of founding, setting up, establishing, etc..

    a policy in effect since the foundation.

    Synonyms:
    settlement, establishment
  5. the state of being founded.

    Synonyms:
    settlement, establishment
  6. an institution financed by a donation or legacy to aid research, education, the arts, etc..

    the Ford Foundation.

  7. an endowment for such an institution.

  8. a cosmetic, as a cream or liquid, used as a base for facial makeup.

  9. foundation garment.

  10. Solitaire. a card of given denomination on which other cards are to be added according to denomination or suit.


foundation British  
/ faʊnˈdeɪʃən /

noun

  1. that on which something is founded; basis

  2. (often plural) a construction below the ground that distributes the load of a building, wall, etc

  3. the base on which something stands

  4. the act of founding or establishing or the state of being founded or established

    1. an endowment or legacy for the perpetual support of an institution such as a school or hospital

    2. entitled to benefit from the funds of a foundation

  5. an institution supported by an endowment, often one that provides funds for charities, research, etc

  6. the charter incorporating or establishing a society or institution and the statutes or rules governing its affairs

  7. a cosmetic in cream or cake form used as a base for make-up

  8. See foundation garment

  9. cards a card on which a sequence may be built

"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

Synonym Usage

See base 1.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of foundation

First recorded in 1350–1400; Middle English foundacioun, from Latin fundātiōn- (stem of fundātiō ), equivalent to fundāt(us) (past participle of fundāre; see found 1) + -iōn- -ion

Explanation

A foundation is the base for something. You often hear about the structural foundations of buildings, but a good idea can also be the foundation of a successful business. In the simplest sense, foundations support something else. Friendship is the foundation of a good marriage, and many svelte figures rely on girdles (known to underwear specialists as a foundation garment). But foundations are also charitable organizations. And in cosmetics, foundation is gooey make-up that's supposed to match your skin tone.

Keep Reading on Vocabulary.com

Vocabulary lists containing foundation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

As part of the Sustainable materials and material flows research area, Martin Sahlberg is studying whether Sweden's deposits could become the foundation for a more sustainable magnet industry.

From Science Daily Jul. 24, 2026

Celebrated Japanese writer-director Hirokazu Kore-eda specializes in gentle, sentimental films about the tiny fissures that form along the foundation of families.

From Los Angeles Times Jul. 24, 2026

The foundation did not provide further details behind its decision to close at the time.

From BBC Jul. 24, 2026

And though this argument appears plausible, its statistical foundation is weak.

From MarketWatch Jul. 23, 2026

With Public Allies thriving, and its longevity all but assured thanks to multiyear federal grants and foundation support, I felt that I could now step away in good faith.

From "Becoming" by Michelle Obama

The federal government’s prospective disinvestment in the sciences has long been the status quo for the humanities, with corporate foundations and private philanthropy providing the main funding sources.

From Salon Jul. 28, 2026

And even when I’m teaching at USC now, I say you have to learn the foundations of every business.

From Los Angeles Times Jul. 23, 2026

Jocelin’s determination to build a vast new spire on the cathedral of which he is dean, without adequate foundations, and against all practical advice, begins as a vision and ends in delusion.

From The Wall Street Journal Jul. 22, 2026

He said the previous department had provided good foundations - and now the priority should be spreading AI tech adoption through government and the wider public.

From BBC Jul. 21, 2026

We have said above that a prince must have laid firm foundations; otherwise he will necessarily come to ruin.

From "The Prince" by Niccolò Machiavelli

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training