custodian
Americannoun
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a person who has custody; keeper; guardian.
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a person entrusted with guarding or maintaining a property; janitor.
noun
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a person who has custody, as of a prisoner, ward, etc
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a guardian or keeper, as of an art collection, etc
Other Word Forms
Derived Forms
Etymology
Origin of custodian
1775–85; < Latin custōdi ( a ) watchman ( see custody) + -an
Compare meaning
How does custodian compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
You may know the custodian at your school — the person who's in charge of taking care of the building, in keeping it clean, making sure the heat works, and the roof doesn't leak. The word custodian comes from Latin custos, meaning "guardian," and anyone who looks after something can be a custodian. You might be the custodian of your club's records — you take care of the files and keep them up to date. Or you could be the custodian of the crown jewels — you hold the keys to the treasury and it's your job to make sure the jewels don't get lost or stolen.
Vocabulary lists containing custodian
Frindle
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Unit 1: Ecological Systems
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Awkward
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The conspiracy theory grouped together several so-called "missing scientists" including a retired Air Force general, an engineer, and a custodian.
From BBC • Jun. 2, 2026
He spoke to The Times about L.A.’s tense climate for avant-garde nightlife, what Gen Z wants from extreme noise and how to be a good custodian of underground music history.
From Los Angeles Times • May 20, 2026
A third-party custodian holds the underlying common stock.
From Barron's • May 15, 2026
When Turner acquired MGM’s library, along with Warner Bros.’ pre-1948 titles, he also became a custodian of American cinematic history, whether he intended to or not.
From Salon • May 8, 2026
In his more than a score of years as custodian of the sanctuary there, Maurice Broun has observed and actually tabulated more hawks and eagles than any other American.
From "Silent Spring" by Rachel Carson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
