hypothesis

[hahy-poth-uh-sis, hi-] / haɪˈpɒθ ə sɪs, hɪ- /

NOUN

theory

Synonyms

STRONGEST

assumption axiom conclusion conjecture explanation guess inference interpretation premise proposition rationale supposition theorem thesis

STRONG

antecedent assignment attribution basis belief condition data deduction demonstration derivation foundation ground layout lemma philosophy plan position postulate presupposition principle proposal reason scheme speculation suggestion surmise system term

WEAK

apriority shot in the dark starting point tentative law

Antonyms

STRONGEST

fact proof reality truth

WEAK

calcualtion measurement

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.

Its goal was to test the hypothesis: Does using hormone therapy decrease the risk of heart disease?

From MarketWatch • May 12, 2026

As more discoveries accumulate, many scientists now believe humans were far more adaptable than the original Toba catastrophe hypothesis suggested.

From Science Daily • May 11, 2026

“My hypothesis is that we absolutely crushed our first and second quarters, with growth rates that I’m not sure we’ve ever seen before,” he said.

From Barron's • Apr. 30, 2026

Concern about climate change "had taken second place to issues like cost of living, economy and also immigration" in recent years, the environment psychologist explained, citing a hypothesis known as the "finite pool of worry".

From BBC • Apr. 30, 2026

Hence one hypothesis for the demise of Australia’s and New Guinea’s giants is that they met the same fate around 40,000 years ago.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

Vocabulary lists containing hypothesis

The SAT: Language of the Test, List 1

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100 Top "SAT" Words

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Tier 2 Words for the SBAC ELA Items

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