What does coast mean?
A coast is the land that borders the sea — the zone where ocean meets continent, prized for its scenery, harbours, and settlements. In everyday speech we speak of driving "along the coast," living "on the coast," or an island lying "off the coast" of a country. Beyond geography, "coast" works as a verb: vehicles coast downhill with the engine off or the pedals still, and people are said to coast when they glide through work or life on momentum rather than effort — a usage that often implies taking success for granted. The noun derives from Latin "costa" (rib, side), which also gives us "coastal" and "coastline" among its family of derivatives. Whether describing dramatic cliffs, sandy beaches, or a relaxed approach to achievement, "coast" remains one of English's most versatile and evocative words.
The land adjacent to the sea; the shoreline of a country or region.
"The fishing village sat on a rocky stretch of coast battered by Atlantic storms."
To move smoothly and effortlessly, especially by allowing a vehicle to roll using momentum rather than power; figuratively, to progress without real effort or ambition.
"She switched off the engine and let the car coast down the long hill into the valley."
When applied to people, "coasting" usually carries a slightly critical connotation of underachievement.
Regular plural; used when referring to multiple coastal regions, e.g., different countries' seaboards.
"The book explores the coasts of five continents."
English borrowed "coast" from Latin "costa," meaning rib — so every time you say "the coast is clear," you're speaking a word that literally once meant your ribs.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of coast
"Coast" entered Middle English in the 13th century from Old French "coste," itself derived from Latin "costa," meaning "rib" or "side." The original sense referred broadly to the side or flank of something, before narrowing in English to mean specifically the land beside the sea. Related words from the same Latin root include "accost" (to approach someone) and anatomical terms like "costal" and "intercostal," all preserving the notion of a side or rib.
Related word forms
How coast is actually used
As a noun, "coast" is neutral and widely used in both British and American English, though Americans more often speak of "the East Coast" or "the West Coast." The verb sense carries a mildly negative connotation when describing people who "coast" — it suggests relying on past success rather than current effort. In cycling and driving contexts, "coast" is neutral and purely mechanical.
Easily confused with coast
"Coast" refers to land beside the sea (or gliding along effortlessly), while "cost" means the price of something or a sacrifice incurred.
A "coast" is a broader geographic region of land bordering the sea, whereas a "shore" is the actual strip of land at the water's edge.