coarse

1. course => coarse.
2. originally referring to rough cloth for ordinary wear.
3. coarse is the adjectival use of course.
4. The sense developed from '(following) the usual course' (cf. of course) to 'ordinary, common' to 'lacking refinement', with 'not fine, granular' arising from its application to cloth.

coarse 粗糙的

来自course 的拼写变体。原指常规的，普通的，后来词义贬义化。

coarse

coarse: [14] For such an everyday word, the origins of coarse are surprisingly clouded. It first appears in the forms corse or course, and meaning ‘ordinary, everyday’, which has led to speculation that it is an application of the noun course, in the sense ‘the ordinary run of things, the usual practice’; however, not all etymologists accept this. The modern spelling coarse became established in the 18th century.

coarse (adj.)

early 15c., cors "ordinary" (modern spelling is from late 16c.), probably adjectival use of noun cours (see course (n.)), originally referring to rough cloth for ordinary wear. Developed a sense of "rude" c. 1500 and "obscene" by 1711. Perhaps related, via metathesis, to French gros, which had a similar sense development. Related: Coarsely; coarseness.

1. The voice, less coarse now, stirred her as it had then.

现在那声音已不那么刺耳，它又如当年一样让她怦然心动。

2. She spoke in a quiet voice but used remarkably coarse expressions.

她说话声音很小，但是用了些特别粗俗的字眼儿。

3. Using a pestle and mortar, pulverise the bran to a coarse powder.

用杵和臼，将麸皮磨成粗粉。

4. He's a coarse, foul-mouthed bully.

他是一个粗俗无礼、满嘴脏话的恶棍。

5. The man was brutish and coarse.

那人野蛮粗俗。

【gross, crude, coarse, vulgar】
这组词都有“粗鲁的，粗俗的”的意思，其区别是：
gross: 语气强烈，指粗鲁、无礼貌，令人讨厌。
crude: 与vulgar同义，也指言谈举止粗俗，不文雅，缺乏教养。
coarse: 指缺乏教养，言谈粗俗，举止粗野，可与vulgar换用。
vulgar: 侧重指对听者的冒犯，往往强调粗野，言行、趣味不高，缺乏教养。

【rude, crude, harsh, rough, coarse】
这组词都有“粗糙的”的意思，其区别是：
rude: 指加工粗糙、不精细。也指某人的言行举止粗鲁无礼，缺乏修养。
crude: 主要指未经加工处理尚处于自然状态的物质；也可指人的言行粗鲁。
harsh: 指外表、性质、声音的粗糙、刺耳、刺目，强调使人不愉快的粗糙感。
rough: 普通用词，指某物纹理不精细，或表面凹凸不平，不光滑。
coarse: 指某物质地粗糙低劣或编织、加工等不精细、精巧。也指人的言谈举止粗鲁，不文雅。