Lieutenant meaning

lo͝o-tĕnənt
The definition of a lieutenant is a deputy, aide or official ranking under a captain.

An example of a lieutenant is a deputy sheriff.

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(military) The lowest commissioned officer rank or ranks in many military forces.
  • (military, US) In the US Army, Air Force and Marines, second lieutenant is the rank below first lieutenant, which is below captain. Both ranks may be referred to as Lieutenant or as the complete forms of the ranks.
  • (military, US, navy) A naval officer whose rank is above that of ensign in the United States Navy and below that of a lieutenant commander. There are two ranks of lieutenant: lieutenant junior grade and lieutenant.
  • (military, US) A commissioned officer in the United States Coast Guard, Public Health Service, or National Atmospheric and Oceanic Administration whose rank is above that of ensign and below lieutenant commander. There are two ranks of lieutenant: lieutenant junior grade and lieutenant.
  • (military, UK) A naval officer in the Royal Navy who holds the rank above sub-lieutenant and below lieutenant commander.
  • (military, Canada, Australia, New Zealand) A naval officer who holds the rank above sub-lieutenant and below lieutenant commander.
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A person who executes the plans and directives of another.
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A military grade that is junior to the grade the adjective modifies: lieutenant colonel, lieutenant general, lieutenant commander.
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A commissioned officer in the British and Canadian navies ranking just below a lieutenant commander.
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An officer in a police or fire department ranking below a captain.
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One who acts in place of or represents a superior; an assistant or deputy.

The organized crime figure and his lieutenants.

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A person who acts for a superior, as during the latter's absence; aide; deputy.
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An officer ranking below a captain as in a police or fire department.
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(u.s. mil.) A title used in addressing a first lieutenant or second lieutenant.
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(u.s. navy) An officer ranking above a lieutenant junior grade and below a lieutenant commander.
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Other Word Forms

Noun

Singular:
lieutenant
Plural:
lieutenants

Origin of lieutenant

  • Middle English deputy from Old French lieu place lieu tenant present participle of tenir to hold (from Latin tenēre ten- in Indo-European roots)

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French lieutenant, from lieu (“place") + tenant (“holding").

    From Wiktionary