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 of trooper

• soldier
• warrior
• fighter

Examples of trooper in a Sentence

a moving Memorial Day service honoring our fallen troopers

Recent Examples on the Web

Pennsylvania State Police said this has not come across its troopers' desks yet. —Meghan Schiller, CBS News, 23 Jan. 2026

In Oklahoma, Department of Transportation workers pretreated roads with salt brine while the Highway Patrol canceled troopers' days off. —Arkansas Online, 23 Jan. 2026

The spokeswoman added that since Howell is an NYPD officer, the state Attorney General’s office will be investigating the case as well as the state troopers. —Rocco Parascandola, New York Daily News, 23 Jan. 2026

Her alleged conspiracy was revealed to officials when a Massachusetts State Police trooper pulled her over for erratic driving in Wareham in July 2023. —Flint McColgan, Boston Herald, 22 Jan. 2026

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