noun · academic

hypothesis

UK/haɪˈpɒθəsɪs/US/haɪˈpɑːθəsɪs/hy·POTH·e·sis

Band 7+task2task1speaking

a proposed explanation for a phenomenon, to be tested by further investigation or experiment

Examples

The researchers formulated a clear hypothesis before collecting data.

The hypothesis that diet affects mood was supported by the trial.

A testable hypothesis is essential in experimental design.

Band 8 sentence

The authors proposed a novel hypothesis linking urban design to mental well‑being and outlined how it could be empirically tested.

Collocations

  • test a hypothesis
  • formulate a hypothesis
  • testable hypothesis

Word family

hypothesis nounhypothesize verbhypothetical adj

Common mistakes

a hypothesisa hypothesis

theory (when meaning hypothesis)hypothesis

Say it for a higher band

5idea6theory7+hypothesis

Synonyms

theory

assumption

Easily confused

theory

Darwin's theory of evolution transformed biological science.

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