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Synonyms

open sea

American  

noun

  1. the main body of a sea or ocean, especially the part that is outside territorial waters and not enclosed, or partially enclosed, by land.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ukrainian sea drones have revolutionised naval warfare since Moscow's invasion, relentlessly hunting down Russian warships and tankers in the open sea and even at naval bases.

From BBC • May 8, 2026

Most existing wave energy devices perform well only under specific wave conditions, limiting their effectiveness in the constantly shifting environment of the open sea.

From Science Daily • Feb. 18, 2026

The family of Alejandro Carranza Medina, 42, who was killed on September 15, rejected assertions there were drugs on his vessel and said he was a fisherman doing his job on the open sea.

From Barron's • Jan. 27, 2026

In another striking show of force, the U.S. military on Wednesday seized two sanctioned oil tankers on the open sea.

From The Wall Street Journal • Jan. 7, 2026

When she saw an opportunity to escape, she commanded her fleet to unfurl the sails and make a run for the open sea.

From "Sterling Biographies®: Cleopatra: Egypt's Last and Greatest Queen" by Susan Blackaby

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