What does carby mean?
"Carby" is an informal adjective used to describe food that contains a lot of carbohydrates — think bread, pasta, rice, potatoes, and baked goods. It arose as a natural adjectival form of "carb," itself a shortening of "carbohydrate." The word belongs firmly to casual registers: it thrives in conversations about dieting, fitness, meal planning, and comfort food, where speakers want a quick, friendly way to flag a dish as starch-heavy without sounding clinical. A person might say they're avoiding "carby lunches" at work or indulging in a "carby dinner" after a long run. Because it is colloquial, style guides and formal writing generally prefer alternatives such as "starchy," "carb-heavy," or "high-carbohydrate." Despite its informality, "carby" is widely understood across British and American English and fills a genuine gap in everyday vocabulary, offering a single snappy word where a longer phrase would otherwise be needed.
adjectiveInformal term describing food that is high in carbohydrates, such as bread, pasta, rice, or potatoes.
- (of food) high in carbohydrates; starchy or carb-heavy
"I'm trying to cut back on carby meals before bed."
"Pizza night is delicious, but it's always the most carby meal of my week."
"She swapped her usual carby breakfast for eggs and avocado."
'Carby' never made it into most formal dictionaries, yet dieters and food bloggers use it constantly — proof that real usage can outpace the lexicographers.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of carby
"Carby" derives from "carb," an early twentieth-century clipping of "carbohydrate," which combines "carbo-" (from Latin "carbo," meaning coal or carbon) with "hydrate." The adjective formed by adding the familiar English suffix "-y," which converts nouns into descriptive adjectives. Its rise parallels growing popular awareness of nutrition and low-carb dieting from the late twentieth century onward.
How carby is actually used
Strictly informal register, common in casual speech, dieting contexts, fitness blogs, and food writing. It rarely appears in formal prose, where 'high-carbohydrate' or 'starchy' would be preferred.
Easily confused with carby
'Carb' is the standard clipped noun for a carbohydrate, while 'carby' is the informal adjective describing something full of carbs.