unrefined
adj.
1590s, "not refined in manners," from un-(1) "not" + past participle of refine, v.. Meaning "not free from gross matter" is recorded from 1610s.
| 词汇 | unrefined | 
| 词根词缀 | Online Etymology Dictionary unrefined adj. 1590s, "not refined in manners," from un-(1) "not" + past participle of refine, v.. Meaning "not free from gross matter" is recorded from 1610s. | 
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