Synonyms for HYPOTHESIS: theory, thesis, proposition, premise, assumption, suggestion, guess, supposition; Antonyms of HYPOTHESIS: fact, knowledge, assurance, certainty

Find 69 different ways to say HYPOTHESIS, along with antonyms, related words, and example sentences at Thesaurus.com.

Find 765 synonyms for hypothesis and other similar words that you can use instead based on 2 separate contexts from our thesaurus.

Find 744 synonyms for Hypothesis to improve your writing and expand your vocabulary.

These are words and phrases related to hypothesis. Click on any word or phrase to go to its thesaurus page. Or, go to the definition of hypothesis. His book advances the hypothesis that …

Synonyms for HYPOTHESIS in English: theory, premise, proposition, assumption, thesis, postulate, supposition, premise, assumption, proposition, …

Synonyms for HYPOTHESIS: theory, belief, guess, supposition, assumption, conjecture, proposal, system, surmise, deduction, premise, thesis, speculation; Antonyms for …

Synonyms for hypothesis in Free Thesaurus. Antonyms for hypothesis. 17 synonyms for hypothesis: theory, premise, proposition, assumption, thesis, postulate, supposition, premiss, …

hypothesis WordReference English Thesaurus © 2025 Sense: Noun: theory Synonyms: theory, thesis, supposition, assumption, presumption, basis, surmise, idea, speculation, premise, …

These are other word, synonyms and antonyms of hypothesis: theory, proposition, supposition, assumption, conjecture, speculation, guess, surmise, notion, idea, concept, premise, …