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

• caretaker
• guardian
• janitor
• keeper
• warden
• watchman

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

But unless data is truly replicated widely, availability still hinges on just a few custodians. —Viktor Trón, Forbes.com, 23 June 2025

The showrunners have worked closely with the Preservation Society of Newport County, custodian of more than a dozen historic residences, to get the kind of access that’s rarely granted to film crews. —Brent Lang, Variety, 20 June 2025

Saudi Arabia, custodian of Islam’s holy sites, has its own claim to leadership of the world’s Muslims. —Karl Vick, Time, 19 June 2025

The delegates, therefore, chose not to explicitly grant Congress the authority to act as the custodian of the civil rights bucket. —Literary Hub, 5 June 2025

Word History

First Known Use

1602, in the meaning defined above

Rhymes for custodian

• cambodian
• collodion
• foucauldian
• 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