plural infantries
1
a
: soldiers trained, armed, and equipped to fight on foot
b
: a branch of an army composed of these soldiers
2
: an infantry regiment or division

Did you know?

The Italian word fante (from Latin infans, “infant, child”) originally meant “child,” later “youth, boy,” and then “servant.” In the 14th century, fante also took on the sense “foot soldier.” In Renaissance times, the fanteria, foot soldiers collectively, became a significant branch of arms, and the Italian word infanteria, was borrowed into English in the 1500s.

Examples of infantry in a Sentence

He joined the infantry after leaving school.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
While economic considerations played a role, these militaries also reorganized to better support UN and NATO peacekeeping and counterterrorism efforts, which focused on light infantry operations. Vikram Mittal, Forbes, 11 Mar. 2025 Most military aid in 2024 consisted of artillery systems, Bradley infantry fighting vehicles, and advanced missile systems (HIMARS and ATACMS)—none of which are practical for cartel use. Dan Perry, Newsweek, 13 Feb. 2025 In the last year alone, Russian forces lost approximately 4,000 tanks, armored personnel carriers, infantry fighting vehicles, and artillery systems, while Ukrainian losses amounted to 1,100 units. Katya Soldak, Forbes, 25 Feb. 2025 The standard Space Pirate infantry units are the Scavengers. Tom Rogers, Newsweek, 21 Feb. 2025 See All Example Sentences for infantry

Word History

Etymology

Middle French & Old Italian; Middle French infanterie, from Old Italian infanteria, from infante boy, foot soldier, from Latin infant-, infans

First Known Use

1579, in the meaning defined at sense 1a

Time Traveler
The first known use of infantry was in 1579

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Cite this Entry

“Infantry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infantry. Accessed 24 Mar. 2025.

Kids Definition

infantry

noun
plural infantries
: a branch of an army made up of soldiers trained, armed, and equipped to fight on foot
Etymology

from early French infanterie and early Italian infanteria, both meaning "infantry," from early Italian infante "infant, boy, foot soldier," from Latin infans "infant"

Word Origin
In the Middle Ages in France, a young soldier from a good family who was not yet a knight was called enfant, which means "child." Likewise, in Italy a soldier moving on foot behind a knight riding a horse was an infante. Later, Italian foot soldiers as a group became known as infanteria, which was borrowed into French as infanterie and into English as infantry.
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