custodian

noun

cus·​to·​di·​an ˌkə-ˈstō-dē-ən 

: one that guards and protects or maintains

especially : one entrusted with guarding and keeping property or records or with custody or guardianship of prisoners or inmates

custodianship

ˌkə-ˈstō-dē-ən-ˌship 

noun

Synonyms of custodian

• keeper
• janitor
• warden
• caretaker
• guardian

Examples of custodian in a Sentence

the custodian made his usual rounds of the building to make sure that everything was OK

served as custodian of the prisoner until he could be turned over to federal authorities

Recent Examples on the Web

This accounts for about 120 workers, including security guards, custodians, groundskeepers and wheelchair agents. — Tara Lynch, CBS News, 7 Sep. 2026

This might be a two-step process, of course, with the next custodians initially coming in as minority partners. — Matt Slater, New York Times, 4 Sep. 2026

Today, fifth-generation Fiorentinos are the custodians of this old-world, grandest of grand hotels, nearing its 200th anniversary. — Condé Nast, Condé Nast Traveler, 3 Sep. 2026

Many of them had saved money while toiling as farmworkers, cooks, custodians and construction workers. — Ruben Vives, Los Angeles Times, 29 Aug. 2026

Word History

First Known Use

1602, in the meaning defined above

Rhymes for custodian

• cambodian
• collodion
• nickelodeon

Kids Definition

custodian

noun

cus·​to·​di·​an ˌkəs-ˈtōd-ē-ən 

1

: someone who guards and protects or takes care of something for another person

2

: someone who cleans and takes care of a building : janitor sense 2

Legal Definition

custodian

noun

cus·​to·​di·​an

: an individual entrusted with guarding and keeping property or having custody of a person: as

a

: the warden of a prison

b

: a person given custody of a child by court order

c

: a person named to manage a child's property under the Uniform Transfers to Minors Act

d

: a person or entity appointed by a bankruptcy court to take charge of the debtor's property for purposes of administration

custodianship noun