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Definitions

basis

[bey-sis] / ˈbeɪ sɪs /
NOUN
physical foundation
Synonyms
STRONGEST
base footing ground support
STRONG
bed bottom foot groundwork rest seat substructure
WEAK
resting place
Antonyms
STRONG
top
NOUN
foundation for belief, action
Synonyms
STRONGEST
assumption base essential evidence explanation footing fundamental justification premise principle proof reason security support theory
STRONG
antecedent authority axiom backbone background backing bedrock cause center core crux data dictum essence heart infrastructure keynote keystone law nexus nucleus postulate presumption presupposition root rudiment sanction source substratum theorem warrant
WEAK
chief ingredient hard fact principal element underpinning
Antonyms
STRONGEST
auxiliary fact reality trivia
STRONG
effect end exterior exteriority outside periphery result surface

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 said in a statement to BBC Verify that it was now switching to a system of "managed distribution" and would share selected images "on a one-off basis until the security risk has abated".

From BBC • Apr. 11, 2026

Bond markets show caution, with 2-year Treasury notes rising 40 basis points since February and fewer rate cuts priced in.

From Barron's • Apr. 10, 2026

Let’s proceed on the basis that you own your home outright.

From MarketWatch • Apr. 10, 2026

Germany’s Commerzbank said it doesn’t see a basis for a deal with Italy’s UniCredit after recent interactions between the two banks, signaling it will continue to focus on its standalone strategy.

From The Wall Street Journal • Apr. 10, 2026

Juries were thus free to reach decisions on the basis of circumstantial evidence if they chose to.

From "The Invention of Science" by David Wootton

Vocabulary lists containing basis

PARCC: Language of the Test (Grade 11)

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"Democracy in America, Vol. 1" by Alexis de Tocqueville, Introduction–Chapter 5

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Words for Cheese Writers

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!