commander
Americannoun
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a person who commands.
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a person who exercises authority; chief officer; leader.
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the commissioned officer in command of a military unit.
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U.S. Navy. an officer ranking below a captain and above a lieutenant commander.
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a police officer in charge of a precinct or other unit.
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the chief officer of a commandery in the medieval orders of Knights Hospitalers, Knights Templars, and others.
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a member of one of the higher classes or ranks in certain modern fraternal orders, as in the Knights Templars.
noun
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an officer in command of a military formation or operation
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a naval commissioned rank junior to captain but senior to lieutenant commander
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the second in command of larger British warships
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someone who holds authority
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a high-ranking member of some knightly or fraternal orders
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an officer responsible for a district of the Metropolitan Police in London
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history the administrator of a house, priory, or landed estate of a medieval religious order
Other Word Forms
Derived Forms
Etymology
Origin of commander
1250–1300; Middle English < Old French comandere, equivalent to comand ( er ) to command + -ere < Latin -ātōr- -ator
Explanation
A commander is the person in charge, particularly in the military. If you're in the Navy, your commander gives directions that you're expected to follow. A commander does exactly what it sounds like: she issues instructions or commands and assumes they'll be obeyed. Although there are other kinds of commanders, you're most likely to find the word describing a military official. The President of the United States is considered the "Commander-in-Chief" of the US Armed Forces. The word comes from the Old French comander, "to order."
Vocabulary lists containing commander
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This Week in Words: Current Events Vocab for December 18–December 24, 2021
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The most powerful are Ahmad Vahidi, the head of the Revolutionary Guard, the country’s paramilitary force, and Ali Abdollahi, commander of the Revolutionary Guard’s joint command with the conventional army.
From The Wall Street Journal • Jun. 12, 2026
He returned in 2019 aboard Soyuz MS-13 and served as commander of Expedition 61, becoming the first Italian and the third European to command the station.
From Science Daily • Jun. 11, 2026
"You've got the controls," said Reid Wiseman, the commander of that lunar mission.
From Barron's • Jun. 9, 2026
Eisenhower had an instinct for creating a cooperative spirit and came across as a cheerful and broadminded commander.
From The Wall Street Journal • Jun. 5, 2026
Mom was in the same boat, although she was too busy with me and being the commander of the entire Academy to mess around with recreational simulations.
From "Glitch" by Laura Martin
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
