crewless

IPA/ˈkruː.ləs/
IPA/ˈkruː.ləs/

crewless — adjective

  • crewlesspositive
  • more crewlesscomparative
  • most crewlesssuperlative

1. describing a ship, boat, aircraft, or spacecraft that operates without any peopl

1.形容詞C1
釋義

describing a ship, boat, aircraft, or spacecraft that operates without any people on board to control or navigate it.

例句

The Japanese research vessel completed a crewless voyage across the Pacific Ocean.

Camille tested the crewless prototype boat on a calm lake before sending it to sea.

crewless + prototype + boat for an autonomous vessel

同義詞
  • unmanned

    the most common equivalent; used in both military and civilian contexts

  • uncrewed

    a gender-neutral alternative that has largely replaced 'unmanned' in official space agency language

  • autonomous

    emphasises the self-navigating capability rather than the absence of people

反義詞
  • crewed

    the direct opposite; having a crew on board

  • manned

    traditional antonym of 'unmanned'; less common in modern usage

文法句型

crewless + noun (ship / vessel / boat / spacecraft / mission)

用法筆記

Common in technical and news contexts — especially in discussions of autonomous shipping, drone vessels, and uncrewed space exploration. In everyday conversation, 'unmanned' or 'autonomous' is more frequent. 'Crewless' is slightly more formal than 'uncrewed' and is the standard spelling in British maritime English.