diet

DIET noun

uk/daɪət/ us diet noun
(SPECIAL FOOD)

B1 a period when someone eats less food, or only particular types of food, because they want to become thinner, or because they are sick

диета
No cake for me, thanks - I'm on a diet .
diet verb [ I ] uk/daɪət/ us
B1 to eat less food so that you become thinner

соблюдать диету
I've been diet ing for a week, and I still haven't lost any weight.