noun · academic

theory

UK/ˈθɪəri/US/ˈθiːəri/THE·o·ry

Band 6-7task2speakingtask1

an organized set of ideas that explains facts or events

Examples

Her research supports a new theory about language acquisition.

According to the theory, people change behaviour in response to incentives.

In theory, the plan should reduce emissions, but implementation is difficult.

Band 8 sentence

While the theory explains many observations, further data are needed to confirm its predictions.

Collocations

  • a theory of X / propose/develop a theory
  • in theory / under the theory

Word family

theoretical adjectivetheoretically adverb

Common mistakes

In theorys, this is true.In theory, this is true.

He proposed a new theorize.He proposed a new theory.

Say it for a higher band

5idea6hypothesis7+theory

Synonyms

hypothesis

concept

Easily confused

hypothesis

The hypothesis was tested through several experiments.

Related words

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In Sublist 2

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