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hypothesis Synonyms

Another word for hypothesis

Choosing another word for hypothesis depends on context, so the 12 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

A proposed explanation for a phenomenon made on the basis of limited evidence as a starting point for further scientific investigation and testing.

Usage Example

"The researchers designed a series of controlled experiments to test their theory about how the virus spreads."

Strong
theory
proposition
postulate
thesis
premise
supposition

• noun (Context 2)

A supposition, assumption, or unproved idea put forward merely for the sake of argument or speculation.

Usage Example

"Let us work on the assumption that the delivery will be delayed by at least two days."

Strongest
assumption
Strong
presumption
conjecture
speculation
surmise
guess

Opposites of hypothesis

The opposite of hypothesis shifts depending on context. Common opposites include:

fact
certainty
proof
reality
truth
See all opposites of hypothesis

• Nearby Words

hypodermically
hypopharynx
hypothermic
hypothesis
hypothesize
hypothetical
hypothetically

Cite this Entry

Wordmom. (2026). Synonyms for Hypothesis. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/hypothesis
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