astern

/əˈstɜːn/

adjective

  1. Behind a vessel; having a bearing of 180 degrees from ahead.

    "If one ship is following another, the first is astern of the second."

adverb

  1. Behind (a vessel); in the rear.

  2. In the direction of the stern; backward (motion); to the rear.

  3. At or toward the rear of a vessel.

Antonyms: ahead