coast

American  

[kohst] / koʊst /

noun

coasts plural

1. the land next to the sea; seashore.

   the rocky coast of Maine.

   Synonyms:

   littoral, seaside, strand

2. the region adjoining it.

   They live on the coast, a few miles from the sea.

3. a hill or slope down which one may slide on a sled.

4. a slide or ride down a hill or slope, as on a sled.

5. Obsolete. the boundary or border of a country.

6. Informal. the Coast, (in the U.S. and Canada) the region bordering on the Pacific Ocean; the West Coast.

   I'm flying out to the Coast next week.

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verb (used without object)

coasts, present (3rd person singular) coasted, past participle, past coasting present participle

1. to slide on a sled down a snowy or icy hillside or incline.

2. to descend a hill or the like, as on a bicycle, without using pedals.

3. to continue to move or advance after effort has ceased; keep going on acquired momentum.

   We cut off the car engine and coasted for a while.

4. to advance or proceed with little or no effort, especially owing to one's actual or former assets, as wealth, position, or name, or those of another.

   The actor coasted to stardom on his father's name.

5. to sail along, or call at the various ports of, a coast.

6. Obsolete. to proceed in a roundabout way.

verb (used with object)

coasts, present (3rd person singular) coasted, past participle, past coasting present participle

1. to cause to move along under acquired momentum.

   to coast a rocket around the sun.

2. to proceed along or near the coast of.

3. Obsolete. to keep alongside of (a person moving).

4. Obsolete. to go by the side or border of.

idioms

1. the coast is clear, no danger or impediment exists; no persons are in the path or vicinity.

   The boys waited until the coast was clear before climbing over the wall.

coast British  

/ kəʊst /

noun

1. 1. the line or zone where the land meets the sea or some other large expanse of water

   2. ( in combination )

      coastland

2. the seaside

3. 1. a slope down which a sledge may slide

   2. the act or an instance of sliding down a slope

4. obsolete borderland or frontier

5. informal the obstacles or dangers are gone

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verb

1. to move or cause to move by momentum or force of gravity

2. (intr) to proceed without great effort

   to coast to victory

3. to sail along (a coast)

Usage

What does coast mean? As a noun, coast most commonly refers to the land next to the sea or ocean, or the region near it. As a verb, coast often means to move along smoothly or without much effort, but it is used differently in different contexts. Coast has many specific definitions, but they are all related to one of these two main meanings. Example: During our bike ride, we coasted down the mountain road, where you can see almost the entire coast of the island.

Synonym Usage

See shore ¹.

Other Word Forms

Derived Forms

• coastal
  adjective
• coastally
  adverb

Inflected Forms

Nouns

• coasts
  plural

Participles

• coasting
  present
• coasted
  past

Conjugated Forms

Present

• coast
  simple
• coasts
  simple
• have coasted
  perfect
• has coasted
  perfect
• am coasting
  progressive
• are coasting
  progressive
• is coasting
  progressive
• have been coasting
  perfect progressive
• has been coasting
  perfect progressive

Past

• coasted
  simple
• had coasted
  perfect
• was coasting
  progressive
• were coasting
  progressive
• had been coasting
  perfect progressive

Future

• will coast
  simple
• will have coasted
  perfect
• will be coasting
  progressive
• will have been coasting
  perfect progressive

Etymology

Origin of coast

First recorded in 1325–75; (noun) Middle English cost(e), < Anglo-French, Middle French, from Latin costa “rib, side, wall”; (verb) Middle English cost(e)yen, costen, from Anglo-French costeier, Old French costoier, derivative of the noun

Explanation

The noun coast describes the area where the land meets the sea — the seashore. When your mom says, "We're going to the coast," pack your bathing suit, because you'll be near the ocean. Coast also has a verb form that describes an effortless movement, like when you're riding your bike down a hill and you don't have to pedal at all. It can also be used figuratively to describe something that's gained without much difficulty. You might coast to victory in the playoffs when your team wins 8-0 and is never threatened.

Example Sentences

The company said Thursday that it will buy the facility from Gulf Coast Ammonia, a chemical manufacturing company owned by Lotus Infrastructure Partners and MB Energy that is developing the plant.

From The Wall Street Journal • Jul. 2, 2026

One more California legal and constitutional regulation — a very disputatious, valuable and complicated one — derived from Spanish and Mexican practices, very different from East Coast ones: water.

From Los Angeles Times • Jul. 2, 2026

Duhamel, 53, who recently welcomed his second child with wife Audra Mari, purchased the ranch-style dwelling in Encino for $2.65 million in 2017, and it has served as his family’s West Coast base ever since.

From MarketWatch • Jul. 1, 2026

At the World Cup, Ecuador began the tournament with a tough last-minute loss to Ivory Coast and then failed to score against debutant Curacao.

From Los Angeles Times • Jun. 30, 2026

The Coast Guard had no idea what to make of this, but Elizebeth did.

From "The Woman All Spies Fear" by Amy Butler Greenfield

Related Words

• bank
• beach
• coastline
• seaboard
• shore
• shoreline