prisoner

noun

pris·​on·​er ˈpriz-nər 

ˈpri-zᵊn-ər

1

: a person deprived of liberty and kept under involuntary restraint, confinement, or custody

especially : one on trial or in prison

2

: someone restrained as if in prison

a prisoner of her own conscience

see also:

take-no-prisoners take no prisoners

Synonyms of prisoner

• captive
• capture

Examples of prisoner in a Sentence

He was captured by rebel forces and kept as their prisoner for several months before they set him free.

The families were held prisoner for four days.

Recent Examples on the Web

Oman has long played a quiet role in US-Iran diplomacy, while Qatar has facilitated backchannel negotiations and prisoner exchanges. — Lauren Morganbesser, semafor.com, 22 Sep. 2026

When the United Nations Refugee Agency, which had heard about her case from a fellow prisoner’s husband, contacted Thai authorities to appeal for their release, she was let go, and allowed to stay in Thailand. — Andrew Nachemson, The Dial, 22 Sep. 2026

While waiting for the prisoners to emerge out of the federal courthouse elevators, attorneys were seen searching online to quickly familiarize themselves with the case, which has already led to four convictions in May. — Jacqueline Charles, Miami Herald, 22 Sep. 2026

Five California prisoners worked in concert to kill a fellow inmate last week at Pelican Bay State Prison, authorities said. — Matthew Ormseth, Los Angeles Times, 20 Sep. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing prisoner

• co-prisoner
• political prisoner
• prisoner of conscience
• prisoner of war
• prisoner's base
• take (someone) prisoner

Kids Definition

prisoner

noun

pris·​on·​er ˈpriz-nər 

-ᵊn-ər

: a person who has been captured or locked up

Legal Definition

prisoner

noun

pris·​on·​er

: a person deprived of liberty and kept under involuntary restraint, confinement, or custody

especially : one under arrest, awaiting trial, on trial, or serving a prison sentence