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:

However, they provide a foundation for future research into better forecasting tools and potential treatments.

From Science Daily Sep. 20, 2026

Her family intends to use the money to fund the foundation.

From Los Angeles Times Sep. 17, 2026

"This year's breeding success is another important milestone in the return of this lost species to England; it shows what can be achieved by very skilled wildlife managers," Roy Dennis OBE from the foundation said.

From BBC Sep. 16, 2026

That 2009 finding was the legal foundation for federal greenhouse gas emissions regulation, which classified six gases as a threat to public health and welfare.

From The Wall Street Journal Sep. 15, 2026

For reasons that made no sense whatsoever, a sizable pool had been constructed in the center of the arena, made by laying a great sheet of plastic over a square foundation of hay bales.

From "Me Talk Pretty One Day" by David Sedaris

He has said all of his remaining stake in Berkshire will be transferred to his children’s foundations by 2034.

From The Wall Street Journal Sep. 18, 2026

Like the groves and gardens, houses built foolhardily near the dry summertime river risked being pulled off their foundations and washed away by the winter torrents.

From Los Angeles Times Sep. 17, 2026

The programme is funded by philanthropic foundations and has received about $300,000 to date, according to Borneo Futures.

From Barron's Sep. 17, 2026

"By revisiting a long-standing textbook explanation with modern tools, our work aims to improve chemistry education and strengthen the conceptual foundations that support chemical innovation."

From Science Daily Sep. 14, 2026

The foundations of modern science were, the philosopher Edwin Burtt had insisted back in 1914, metaphysical.

From "The Invention of Science" by David Wootton

Vocabulary.com logo
by dictionary.com

Just like flashcards, but way more fun

Don't take our word for it. Leave the boring studying behind and join VocabTrainer today. You'll learn even faster and never look back.

Take me to Vocabulary.com