first lieutenant

noun

The second lowest rank of a commissioned officer in the United States Army, Air Force, or Marine Corps, ranking above a second lieutenant and below a captain. The rank of first lieutenant is equivalent to the naval rank of lieutenant junior grade.

Similar
lieutenant1st lieutenant
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Meanings

nounfirst lieutenant (plural first lieutenants)

plural first lieutenants · alternative 1st lieutenant

  1. governmentThe second lowest rank of a commissioned officer in the United States Army, Air Force, or Marine Corps, ranking above a second lieutenant and below a captain. The rank of first lieutenant is equivalent to the naval rank of lieutenant junior grade.

    Synonyms: lieutenant

  2. governmentAn equivalent rank in other military forces.

Synonyms & antonyms

nounThe second lowest rank of a commissioned officer in the United States Army, Air Force, or Marine Corps, ranking above a second lieutenant and below a captain. The rank of first lieutenant is equivalent to the naval rank of lieutenant junior grade.

Similar
lieutenant

More synonyms by meaning

nouna commissioned officer in the Army or Air Force or Marines ranking above a 2nd lieutenant and below a captain

Similar
1st lieutenant
Broader
lieutenant
Also see
premier

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Arabic ملازم أوّل
  • ملازم أوّلrank in the United States
Chinese Mandarin 中尉, 艦務官 /舰务官
  • 中尉 (zhōngwèi)rank in the United States
  • 艦務官 /舰务官 (jiànwùguān)rank in other military forces
Czech nadporučík
  • nadporučíkrank in the United States
Estonian nooremleitnant
  • nooremleitnantrank in the United States
Finnish yliluutnantti, yliluutnantti
  • yliluutnanttirank in the United States
  • yliluutnanttirank in other military forces
German Leutnant, Oberleutnant
  • Leutnantrank in the United States
  • Oberleutnantrank in the United States
Greek υπολοχαγός, υποπλοίαρχος
  • υπολοχαγός (ypolochagós)rank in the United States
  • υποπλοίαρχος (ypoploíarchos)rank in the United States
  • υποσμηναγός (yposminagós)rank in the United States
Hungarian főhadnagy
  • főhadnagyrank in the United States
Norwegian løytnant, premierløytnant
  • løytnantrank in the United States
  • premierløytnantrank in the United States
Portuguese primeiro-tenente
  • primeiro-tenenterank in the United States
Russian пе́рвый лейтена́нт, ста́рший лейтена́нт
  • пе́рвый лейтена́нт (pérvyj lejtenánt)rank in the United States
  • ста́рший лейтена́нт (stáršij lejtenánt)rank in the United States
Spanish alférez
  • alférezrank in the United States
Turkish üsteğmen, üsteğmen
  • üsteğmenrank in the United States
  • üsteğmenrank in other military forces
Cite this entry
APA

first lieutenant. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/first%20lieutenant

MLA

“first lieutenant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/first%20lieutenant. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “first lieutenant,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/first%20lieutenant.

Source: first lieutenant on Wiktionary, CC BY-SA 4.0.