enigmatic

Compared meaning: hard to understand (adjective).

比较义项：难以理解、令人费解（形容词）。

• obscure

  Emphasizes that something is unclear because it involves specialized, indirect, or little-known information; often used for references, terms, or causes rather than people.

  强调某事物因涉及专业、间接或鲜为人知的信息而难以理解，常用于指典故、术语或原因，而不是人。

  The footnote cited such an obscure legal precedent that even the judge looked it up.

  这条脚注引用的法律判例太生僻了，就连法官都得去查一查。

• opaque

  Describes language, systems, or processes that resist understanding as if blocking a clear view; common with bureaucratic or technical contexts, often implying a lack of transparency.

  形容语言、制度或流程让人看不透、难以理解，常用于官僚或技术语境，暗示缺乏透明度。

  The company's pricing policy was so opaque that customers never knew what they'd pay.

  这家公司的定价政策太不透明了，顾客永远不知道自己要付多少钱。

• incomprehensible

  The strongest term: something is impossible to understand at all, not merely difficult; used for speech, writing, or explanations that make no sense to the listener.

  语气最强，表示完全无法理解，而不仅仅是困难；常用于说话、书写或解释让听者完全摸不着头脑的情况。

  His slurred explanation of the accident was completely incomprehensible to the police officer.

  他含糊不清地讲述事故经过，警察完全听不懂。

• enigmatic 本词

  Focuses on mystery and intrigue rather than pure difficulty; typically describes people, expressions, or remarks that puzzle and fascinate, inviting curiosity.

  侧重神秘费解而非单纯的理解困难，通常形容让人捉摸不透、引发好奇的人、表情或言语。

  She gave an enigmatic reply that left her friends guessing for days.

  她给出了一个意味深长的回答，让朋友们猜测了好几天。

All four mean hard to understand. Obscure means unclear due to specialized or little-known information, often about facts. Opaque describes language or systems that block understanding, as in bureaucracy. Incomprehensible is strongest: impossible to understand. Enigmatic means mysterious and puzzling, about people or expressions.

这四个词都表示“难以理解”，但语气和适用对象不同：obscure强调因涉及生僻或间接的知识而不易理解，多用于典故、术语或原因；opaque强调像被遮蔽一样让人看不透，常用于制度、语言等语境；incomprehensible语气最强，指完全无法理解；enigmatic则强调神秘费解、引人好奇，多用于人物、表情或言语。这里不比较obscure“鲜为人知的”这一义项，也不比较opaque“不透明（指物体不透光）”的字面义项。