rude

Compared meaning: rough, not finely made or finished (adjective).

比较义项：粗糙的、未经精细加工的（形容词）。

• rude 本词

  Describes something crudely or primitively made, especially simple structures or tools; literary/old-fashioned register, rarely used this way in everyday speech.

  形容做得粗糙、简陋或原始，尤指简单的建筑物或工具；属于文学性、较为老式的用法，在日常口语中很少这样使用。

  The travelers spent the night in a rude shelter made of branches and mud.

  旅行者们在一个用树枝和泥巴搭成的简陋庇护所里过了一夜。

• coarse

  Describes the rough physical texture of a material like fabric, sand, or skin; a common, neutral word used in everyday descriptions.

  形容材料（如布料、沙子或皮肤）本身粗糙的质地；是一个常见、中性的词，常用于日常描述。

  The coarse wool sweater scratched uncomfortably against her bare skin.

  那件粗羊毛毛衣摩擦在她裸露的皮肤上，感觉很不舒服。

Rude and coarse both describe something rough or not finely made. Rude means crudely made, like simple tools, sounding literary and old-fashioned. Coarse means rough in texture, like fabric or sand, and is common today. Rude means impolite; coarse can mean vulgar; not compared.

这两个词在“粗糙、未经精细加工”这一义项上意思相近，但侧重不同：rude 强调制作简陋、原始，常见于文学性描述；coarse 强调材质本身的粗糙质感，用法更常见、更中性。这里不比较 rude 常见的“无礼、粗鲁”义，也不比较 coarse 的“粗俗、下流”义（如 coarse language）。

Compared meaning: primitive, simple and undeveloped (adjective).

比较义项：原始的，未开化的（形容词）。

• primitive

  The neutral, everyday word for an early or simple stage of development; used freely in ordinary, scientific, and historical writing without negative judgment.

  primitive 是描述早期或简单发展阶段的中性常用词，可自由用于日常、科学和历史类文本中，不带负面评价。

  Early humans carved primitive tools out of flint and bone.

  早期人类用燧石和骨头雕刻出原始的工具。

• rude 本词

  A dated, literary word for the same idea, almost always describing simple huts, shelters, or crafts; elsewhere rude usually means impolite, so this sense is easy to miss.

  rude 在这个意义上是过时的、文学性的说法，几乎总是用来描述简陋的小屋、住所或手工制品；在其他语境中 rude 通常指“粗鲁的”，因此这个原始义很容易被忽略。

  The explorers slept in rude huts built from branches and mud.

  探险者们睡在用树枝和泥巴搭建的原始小屋里。

Primitive and rude are close in meaning here. Primitive is the neutral, everyday word for an early, simple stage of development. Rude here is old-fashioned and literary, describing simple huts or shelters. This does not compare rude's everyday meaning, 'impolite'.

这两个词在“原始的”这个意义上很接近，但语体和常见程度不同：primitive 是描述早期发展阶段的中性常用词；rude 在这个意义上是过时的、文学性的说法，多与 primitive 或 crude 连用。这里不比较 rude 更常见的“粗鲁的，无礼的”这一义项。