Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “diet”


adjective [before noun]     /ˈdaɪ.ət/
describes food or drink that contains less sugar or fat than the usual type, and often contains an artificial sweetener: diet colaVarious qualities of foodDiets and dieting
(Definition of diet adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of diet

Definitions of “diet” in other dictionaries

Word of the Day


willing to give money, help, kindness, etc., especially more than is usual or expected

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More