repository

repository — noun

1. a place, container, or system used for keeping things safe so they can be found

1.nounB2
Definition

a place, container, or system used for keeping things safe so they can be found and used when needed — for example, a library holding rare manuscripts, a computer folder storing project files, or a warehouse protecting furniture and machinery

Example

The university library serves as a repository for rare historical documents and manuscripts.

serves as a repository for + specific items

Bao uploaded the project files to an online repository for the team to access.

online repository (digital context)

Common collocations
  • central repository
  • digital repository
  • data repository
  • online repository
  • shared repository
  • repository of + items
  • serve as a repository for
  • the main repository for
Synonyms
  • depository

    more specific to formal safekeeping of valuable items such as money or legal documents

  • archive

    specifically for historical records or documents organized for long-term preservation

  • storehouse

    more concrete and everyday; can refer to any building or room where things are kept

  • vault

    suggests high security, typically for money, valuables, or confidential files

Grammar Patterns

a repository of + noun phrase

serve as a repository for + noun phrase

Usage Note

Commonly followed by 'of' to name the contents (a repository of knowledge) or 'for' to name the purpose/system (a repository for shared files). Frequently modifies both physical places (library, warehouse, vault) and digital systems (database, code archive, cloud folder).

Common Mistakes

My closet is a repository of dirty laundry.
My closet is a dumping ground for dirty laundry.
'repository' implies orderly, purposeful storage for future retrieval, not just any accumulation.
The fridge is a repository for leftover food.
The fridge is a place for leftover food.
For everyday household storage, 'repository' sounds too formal; use 'place' or 'container' instead.

2. a person or thing that contains a great depth of knowledge or information on a p

2.nounC1
Definition

a person or thing that contains a great depth of knowledge or information on a particular subject — such as an expert who remembers every detail of a town's history, or a reference book packed with useful facts

Example

The old librarian was a living repository of local history and could answer any question.

living repository of + subject field

Lara's travel journal is a repository of useful tips for visiting Southeast Asia.

Common collocations
  • living repository
  • repository of knowledge
  • repository of wisdom
  • repository of information
  • repository of facts
  • valuable repository
  • serve as a repository of
Synonyms
  • mine

    more informal and vivid — a mine of information suggests rich, extractable knowledge

  • treasure trove

    emphasizes value and discoverability — a treasure trove of facts

  • source

    neutral and everyday; the simplest choice for 'person who provides information'

Grammar Patterns

a repository of + abstract noun (knowledge, wisdom, information)

Usage Note

This sense is always figurative — the 'repository' is not a physical container but a source of information. When applied to a person, it often carries admiration (a repository of wisdom). 'Living repository' is a common collocation. Distinguish from sense 1 (STORAGE), which refers to a literal place or system for keeping objects.

Common Mistakes

My phone is a repository of all my photos.
My phone stores all my photos.
For everyday digital storage, use 'store' or 'hold'; 'repository' sounds unnecessarily formal.
He is a repository of basketball shoes.
He has a large collection of basketball shoes.
'Repository' for a person only works with knowledge/information, not physical objects.

repository — adjective

Word family

  • reposit
    verb
  • reposition
    verb
  • depository
    nounC1

Synonym discussion

Sense: noun/1

While 'repository', 'depository', 'archive', 'storehouse', 'vault', and 'cache' all describe places where things are kept, they differ in what is stored and how it is organized. 'Repository' is the most general term for any organized storage system — physical or digital — where items are kept for future access. 'Depository' is narrower, typically used for formal safekeeping of valuable items like money or legal documents (a bank depository). 'Archive' specifically refers to historical records or documents preserved for research. 'Storehouse' is more concrete and often literal (a storehouse for grain). 'Vault' emphasizes high security (a bank vault for cash or jewels). 'Cache' suggests hidden or secret storage (a weapons cache), often smaller in scale. For example: 'The university's digital repository holds thousands of research papers' — here 'archive' would also fit, but 'depository' would sound financial, and 'vault' would sound overly secure.

depositoryarchive ↗storehouse ↗vault ↗cache ↗

Common collocations

Nouns

  • data repository
  • software repository
  • knowledge repository
  • code repository
  • digital repository

Phrases

  • central repository
  • shared repository
  • vast repository
  • online repository
  • public repository
  • private repository

Prepositions

  • in a repository
  • from a repository
  • repository of
  • repository for

Etymology

LatinFrenchEnglish

Repository comes from Latin 'repositorium', meaning 'a place where things are stored,' derived from 'reponere' ('to put back' or 'to store'), which combines 're-' ('back') and 'ponere' ('to place'). The word entered English through French in the 1400s. For centuries it referred only to physical storage places (chests, cupboards, warehouses). By the 1700s, writers began using it figuratively for persons or books rich in knowledge — 'a repository of learning.' The medical meaning (long-acting drug) developed in the mid-1900s with advances in pharmacology and sustained-release formulations.