trooper

noun

troop·​er ˈtrü-pər 

1

a(1)

: an enlisted cavalryman

(2)

: the horse of a cavalryman

b

: paratrooper

c

: soldier

2

a

: a mounted police officer

b

: a state police officer

3

: trouper sense 2

Synonyms

• dogface
• fighter
• legionary
• legionnaire
• man-at-arms
• regular
• serviceman
• soldier
• warrior

Examples of trooper in a Sentence

a moving Memorial Day service honoring our fallen troopers

Recent Examples on the Web

This incident comes less than two weeks after a trooper on the Mass Pike was seriously injured in a hit-and-run crash. —Rick Sobey, Boston Herald, 24 June 2025

Williams was allegedly clocked by the trooper going more than 90 miles per hour and the trooper initiated a traffic stop, according to state police. —Sean Krofssik, Hartford Courant, 22 June 2025

At the same time, more than 100 law enforcement personnel descended — from EMS, firefighters and state troopers, to the South Carolina Department of Natural Resources. —Theresa Braine, New York Daily News, 22 June 2025

Preliminary information from troopers shows that Cody L. Lamping, 16, was driving a 2005 Toyota passenger car south on 155th Street as a 68-year-old man drove a 2017 Chevrolet pickup truck west on State Avenue. —Kendrick Calfee, Kansas City Star, 18 June 2025

Word History

First Known Use

1640, in the meaning defined at sense 1a(1)

Phrases Containing trooper

• moss-trooper
• storm trooper

Rhymes for trooper

• grouper
• hooper
• keuper
• looper
• stupor
• super
• paratrooper

Kids Definition

trooper

noun

troop·​er ˈtrü-pər 

1

: a cavalry soldier

2

a

: a police officer who rides a horse

b

: a state police officer