arcane

Definitions

From Latin arcānus 'shut up in a box,' from arca 'chest.' What you lock in a chest is what you keep hidden — so arcane means secret, obscure, known only to insiders. Arcane knowledge isn't merely difficult; it's deliberately closed off, like a secret formula in a locked box.

Common Collocations

• 1.arcane knowledge晦涩的知识
• 2.arcane rules晦涩的规则
• 3.arcane details深奥的细节
• 4.arcane rituals神秘的仪式

Example Sentences

• 1.

  The tax code is full of arcane rules that confuse most people.

• 2.

  He spent years studying the arcane symbols of the old order.

• 3.

  Only a handful of experts understand the arcane details of the system.

Easily Confused

arcane vs obscure — Both mean hard to understand, but arcane implies the knowledge is secret and held by a select few (arcane rituals); obscure just means unclear or little-known, with no hint of secrecy (an obscure poet, an obscure reference). If insiders are guarding it → arcane; if it's simply faded or unclear → obscure.