theories (B2)

noun

Pronunciation: /ˈθiːəriz/

Definition

Systematic ideas or explanations developed to understand or predict phenomena, often based on observation and reasoning.

Examples

• Theories about the origin of the universe are constantly being refined.

• Her theories on child development have influenced many educators.

• Several competing theories exist to explain the company's sudden decline.

How to Use theories

theory of (prepositional phrase)

A theory explaining a specific subject or concept. — "The theory of relativity changed our understanding of physics."

theory about (prepositional phrase)

A theory concerning a particular topic or idea. — "There are many theories about the cause of the extinction."

Synonyms of theories

Words with a similar meaning to theories:

• ideas
• concepts
• hypotheses
• doctrines

Antonyms of theories

Words with the opposite meaning to theories:

• facts
• certainties

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