custodian C2+ Topic:People & Society US /kʌˈstoʊdiən/ UK /kʌˈstəʊdiən/ See IPA manual Meanings 1 noun a person responsible for guarding or maintaining something The museum's custodian held the only key to the vault. Thesaurus Synonyms 1 noun · a person responsible for... guardiankeepercaretakerstewardwardenjanitor Word family Derived forms custodianship Related forms custodycustodial Etymology AI details From Latin custodia ('guarding, custody') + -an, from custos ('guardian, keeper'), of uncertain ultimate origin. custodia Latin custos Latin View etymology graph -> Topics People & Society Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # custodian **Type:** Word **Level:** C2+ **Part of speech:** noun **IPA (US):** /kʌˈstoʊdiən/ **IPA (UK):** /kʌˈstəʊdiən/ ## Meanings 1. a person responsible for guarding or maintaining something ## Examples - The museum's custodian held the only key to the vault. ## Synonyms - guardian - keeper - caretaker - steward - warden - janitor ## Derived Forms - custodianship ## Related Forms - custody - custodial ## Roots and Affixes - Root: custodia - Root: custos ## Etymology From Latin custodia ('guarding, custody') + -an, from custos ('guardian, keeper'), of uncertain ultimate origin. ## AI Etymology Custodian comes from Latin custodia ('guarding, custody') + -an, from custos ('guardian, keeper'), of uncertain ultimate origin. The etymological trail includes Latin custodia and Latin custos. As a noun, custodian names a person responsible for guarding or maintaining something. The same family is visible in derived forms such as custodianship and related forms such as custody and custodial. The wording should be read with that uncertainty intact: the proposed connection is plausible rather than absolute. ## Topics - People & Society - Word Formation & Derivatives markdown