citadel

citadel — noun

1. in past times, a stone fortress built as part of a town's defences, where people

1.名詞C1
釋義

in past times, a stone fortress built as part of a town's defences, where people could shelter from attack

例句

Ravi jogged up the steep path to the ancient citadel before the tourists arrived each morning.

concrete location: citadel as a historic landmark

The citadel's walls, built over a thousand years ago, still tower above the modern city.

同義詞
  • fortress

    broader term — any large fortified building, not necessarily part of a city

  • stronghold

    emphasises military strength and defence capability; can be used metaphorically

  • castle

    often served as a royal residence; a citadel was purely defensive

  • fort

    smaller and simpler than a citadel; typically an outpost rather than a city's main defence

文法句型

citadel + of [place name]

the citadel + verb (stands / towers / sits)

用法筆記

Historically refers to a fortress built within a walled city, distinct from a free-standing castle or an isolated frontier fort.

常見錯誤

❌They built a citadel in the middle of the forest far from any town.
✅They built a fort in the middle of the forest far from any town.
💡A citadel is part of or next to a city, not an isolated structure in the wilderness.

2. a powerful group, industry, or institution that is extremely hard for outsiders

2.名詞C2
釋義

a powerful group, industry, or institution that is extremely hard for outsiders to join or influence without knowing the right people

例句

For decades, the old publishing house remained a citadel that no young writer could enter.

metaphorical use: institution as an impenetrable citadel

Theo used his father's connections to get a job inside the finance world's citadel.

同義詞
  • bastion

    similar figurative meaning; often implies defending a tradition or set of values

  • stronghold

    close synonym; works in both literal and figurative contexts

  • fortress

    figurative use similar to citadel, but slightly more common in everyday language

反義詞
  • open door

    a situation or organisation that anyone can easily join or access

文法句型

citadel of [domain]

break into the citadel of [something]

the citadel of [something] + verb (remains / guards)

用法筆記

Always used figuratively in modern contexts. Frequently followed by 'of' + a domain (e.g. 'citadel of privilege', 'citadel of power'). Carries a negative connotation of exclusion and elitism.

常見錯誤

❌Apple is a citadel of the tech industry.
✅Apple is a dominant company in the tech industry.
💡'Citadel' is not simply a synonym for a powerful company; it specifically implies an organisation that excludes outsiders.
❌The hospital was a citadel of excellent medical care.
✅The hospital was a leading centre for medical care.
💡The metaphorical sense of 'citadel' focuses on exclusion and difficult access, not on quality or achievement.