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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.

New highs continue to be greater than new lows on a daily basis, so this indicator remains bullish.

From MarketWatch • Apr. 30, 2026

Group net profit came in at 323 million euros in the first three months of the year on a current-cost-of-supplies basis.

From The Wall Street Journal • Apr. 30, 2026

The Scottish and UK governments had both lobbied for the current 10% tariff rate to be reduced or removed on the basis it would benefit both Scottish and US distillers.

From BBC • Apr. 30, 2026

Cherny, for his part, thinks that CVS is worth more together than on a sum-of-the-parts basis.

From Barron's • Apr. 30, 2026

While he tended to defer to Adams on the basis of age and political experience, Jefferson dominated his relationship with Madison for the same reasons.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

Vocabulary lists containing basis

PARCC: Language of the Test (Grade 11)

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

"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!