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C2Pronunciation
UK
- /əstˈɜːn/
US
- /əˈstɜrn/not-comparableadjective
Meanings
Adverb
at, toward, or behind the stern of a ship; in reverse
Adjective
located toward the stern or rear of a ship
Beyond the definition
Imagine you're on a ship. Everything ahead is where you're going, but everything astern is behind you, toward the stern. Sailors use it for position relative to the ship, and they also use it for movement: if a ship is moving backward, it is said to be going astern, as in "full speed astern." While it is primarily nautical, you can also use it to describe anything trailing behind a moving object, like the trail left astern of a boat.
"Astern" is a nautical directional term meaning toward the rear of a ship or boat, especially behind the stern. It is used in two related ways: position and movement. As a position, it refers to anything that lies behind a vessel—the wake, a vessel already passed, or another ship astern of yours. As movement, it means to go backward; a captain might order the engines "full speed astern" when reversing or stopping the ship’s forward momentum.
Its origins are in seamanship, but it is sometimes used figuratively to mean leaving something behind in time or space. For example, "He put his past failures astern and focused on the future" suggests he treated those failures like a wake left behind. It can also be applied in aviation, such as describing a vapor trail left astern of an aircraft, though the term remains most natural at sea.
Historically, sailors relied on precise directional words like astern to communicate clearly. Knowing exactly where another boat was relative to the ship's stern mattered for safety and maneuvering in tight harbors. Today, although uncommon in everyday speech, astern still carries a distinctly seafaring feel, including the motion of turning away and moving backward.
Examples
- 1
Boat position
A small tug was moving just astern of the cargo ship.
- 2
Direction
Keep watch for any boat coming up from astern.
- 3
Falling behind
In the strong current, the slower boats began to fall astern.
- Phrasefall astern
move behind because you cannot keep up
See also
Forms and spellings
1 form open this card.
Main spelling
- asternadverb