be on a diet — to be following a regulated eating plan to lose weight or improve health
Part of speech: NOUN
Definition: to be following a regulated eating plan to lose weight or improve health
Pronunciation (IPA): /bi ɑn ə ˈdaɪət/
Example Sentences
- I've been on a diet for two weeks, but pizza keeps calling my name.
- My doctor says I should be on a diet to lower my cholesterol.
- He's been on a diet so long, he dreams about hamburgers.
be on a diet
NOUN[/bi ɑn ə ˈdaɪət/]
to be following a regulated eating plan to lose weight or improve health

She's on a diet, so she picked a salad instead of pasta tonight.
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🎤Pronunciation
🌳Etymology
Origin
The word 'diet' derives from Greek 'diaita', which originally meant 'way of life' or 'manner of living'. Over time, the term narrowed in scope to refer specifically to dietary habits and food-related practices, eventually evolving to denote controlled eating for weight management or health purposes in modern usage.
Breakdown
diaita (Greek: way of life, manner of living) → diet (regulated eating practices). The morphological shift reflects a semantic narrowing from general lifestyle to specific dietary regulation.
🎵Rhyme
🔗Collocations
📝Examples
“I've been on a diet for two weeks, but pizza keeps calling my name.”
“My doctor says I should be on a diet to lower my cholesterol.”
“He's been on a diet so long, he dreams about hamburgers.”
“She's on a Mediterranean diet recommended by her nutritionist.”
📚Related Words
Synonyms
Antonyms
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