foundation
Americannoun
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the basis or groundwork of anything.
the moral foundation of both society and religion.
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the natural or prepared ground or base on which some structure rests.
- Synonyms:
- footing
- Antonyms:
- superstructure
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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
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the act of founding, found, setting up, establishing, etc..
a policy in effect since the foundation.
- Synonyms:
- settlement, establishment
-
the state of being founded. found.
- Synonyms:
- settlement, establishment
-
an institution financed by a donation or legacy to aid research, education, the arts, etc..
the Ford Foundation.
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an endowment for such an institution.
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a cosmetic, as a cream or liquid, used as a base for facial makeup.
-
Solitaire. a card of given denomination on which other cards are to be added according to denomination or suit.
noun
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that on which something is founded; basis
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(often plural) a construction below the ground that distributes the load of a building, wall, etc
-
the base on which something stands
-
the act of founding or establishing or the state of being founded or established
-
-
an endowment or legacy for the perpetual support of an institution such as a school or hospital
-
entitled to benefit from the funds of a foundation
-
-
an institution supported by an endowment, often one that provides funds for charities, research, etc
-
the charter incorporating or establishing a society or institution and the statutes or rules governing its affairs
-
a cosmetic in cream or cake form used as a base for make-up
-
cards a card on which a sequence may be built
Related Words
See base 1.
Other Word Forms
- foundational adjective
- foundationally adverb
- foundationary adjective
- prefoundation noun
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; found 1 ) + -iōn- -ion
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.
It is the unglamorous foundation that determines whether lofty AI ambitions can succeed.
From MarketWatch • Apr. 8, 2026
He serves as Founder and CEO of TGR, a multibrand enterprise that includes a charitable foundation, a golf course design company, an events production company and an upscale restaurant, among other holdings.
From Los Angeles Times • Apr. 8, 2026
Golfers should give priority to physical foundation, mobility and movement control over just swing speed, and respect recovery to avoid overuse injuries.
From The Wall Street Journal • Apr. 6, 2026
By combining learning with structured reasoning, it may provide a more efficient and dependable foundation for future AI systems.
From Science Daily • Apr. 5, 2026
The second half gives a brief overview of music education and teaching in the U.S., which provides the foundation of the discipline for the book.
From "Music and the Child" by Natalie Sarrazin
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.
