low-carb

IPA/ˌləʊ ˈkɑːb/
IPA/ˌləʊ ˈkɑːrb/

low-carb — adjective

1. describing a food, meal, or eating plan that includes only a small amount of sug

1.adjectiveB2
Definition

describing a food, meal, or eating plan that includes only a small amount of sugar, bread, rice, pasta, or similar starchy foods, often chosen by people who want to lose weight or manage blood sugar.

Example

Hari follows a low-carb diet to help control his blood sugar.

common collocation: low-carb diet

The café added several low-carb breakfast options to the menu last spring.

attributive use modifying a food noun phrase

Common collocations
  • low-carb diet
  • low-carb meal
  • low-carb snack
  • low-carb recipe
  • low-carb option
  • low-carb bread
  • go low-carb
  • strict low-carb
Synonyms
  • keto

    stricter; refers specifically to very-low-carb, high-fat diets that aim for ketosis

  • low-carbohydrate

    formal full form; more common in medical or academic writing

  • sugar-free

    narrower; refers only to sugar, not to starches like bread and rice

Antonyms
  • high-carb

    describes foods or meals rich in bread, pasta, rice, or sugar

  • carb-heavy

    informal; usually negative connotation

Grammar Patterns

low-carb + [food noun]

be low-carb

Usage Note

Almost always used attributively before a food-related noun (diet, meal, snack, recipe, option). Predicative use ('this dish is low-carb') is acceptable in informal contexts but less common in published prose. Often paired with 'high-protein' or 'keto' in diet writing.

Common Mistakes

I eat low-carbs.
I eat a low-carb diet.
'low-carb' is an adjective; you cannot pluralise it or use it as a noun for the food itself.
This bread is low in carb.
This bread is low-carb.
the fixed compound adjective takes a hyphen and does not split.

Word family

Synonym discussion

Sense: adjective/1

All four labels describe foods that limit some form of carbohydrate, but the scope and register differ. 'Low-carb' is the everyday term for any food or eating plan that cuts back on starches and sugars; it sets no strict numeric limit. 'Low-carbohydrate' is the same idea in formal medical or academic prose. 'Keto' is much stricter — it names a specific high-fat eating pattern designed to trigger ketosis, so a keto meal is always low-carb, but most low-carb meals are not keto. 'Sugar-free' is the narrowest: it bans added sugar but still allows starchy foods like bread or potatoes. A diabetic meal plan might be both low-carb and sugar-free, while a slice of keto-friendly cheesecake is sugar-free but not just low-carb.

low-carb ↗ketolow-carbohydratesugar-free ↗

Common collocations

Nouns

Adverbs

Phrases

  • go low-carb
  • switch to low-carb
  • stick to low-carb

Etymology

English

A modern English compound built from 'low' (small in amount or degree) and 'carb', the informal shortening of 'carbohydrate'. The compound rose to popular use in the late 1990s and early 2000s alongside the Atkins diet boom, when food packaging and restaurant menus began advertising reduced-starch options. 'Carb' as a standalone clipped noun is itself only about a century old in English.