English Reference
Verb

imprison

v.
C1 Advanced Oxford US /ˌɪmˈpɹɪzən/ UK /ɪmpɹˈɪzən/ im·prison UK spelling imprisoned, imprisoning, imprisons

v.to put someone in a place they cannot leave, like a jail or a locked room. It means taking away someone's freedom.

v.to confine a person in a prison or a place of restricted movement. Transitive; implies a formal or forceful deprivation of liberty.


SIMPLE

The judge decided to imprison the thief for two years.

CONTEXTUAL

The government chose to imprison the political activists without a trial during the national emergency.

COMPLEX

Historians argue that the decision to imprison the former monarch only served to galvanize the resistance and accelerate the eventual revolution.

Usage

The verb is transitive and requires a direct object, typically a person or group.

Pitfall
He was imprisoned to five years.He was imprisoned for five years.

Imprison describes the act of confinement; use 'for' to indicate the duration of the sentence.

Imprisoned in a makeshift guardhouse in the middle of Oyster Bay (located in an old building used to bake bread), Maltbie waited for his sentence of death by hanging to be carried out.

Smithsonian Magazine· 17 Aug 2026

During the war, the Western Allies captured an estimated 35,000 Japanese service members, compared with ne arly 8 million Germans, including some 340,400 imprisoned in camps across the United States.

Smithsonian Magazine· 5 Aug 2026

Inherited from Middle English imprisonen, emprisounen, emprisonen, from Old French emprisonner. Equivalent to im- + prison.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Old French emprisonner
Level C1 · Advanced
Frequency Occasional
Updated