unrefined

[uhn-ri-fahynd]
adjective
1.
not refined; not purified, as substances: unrefined metal.
2.
coarse or crude; lacking in refinement of taste, feeling, manners, language, etc.

Origin:
1585–95; un-1 + refined


1. unpurified, crude, coarse. 2. unpolished, uncultured, ill-bred, rude, boorish, vulgar, gross.
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World English Dictionary
unrefined (ˌʌnrɪˈfaɪnd)
 
adj
1.  (of substances such as petroleum, ores, and sugar) not processed into a pure or usable form
2.  coarse in manners or language

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

unrefined
1595, "not refined in manners," from un- (1) "not" + pp. of refine. Meaning "not free from gross matter" is recorded from c.1610.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The turbocharged four-cylinder engine has spirited performance but sounds
  somewhat coarse and unrefined.
Basically a glorified clock radio, it has a chintzy, careless interface with
  speakers that spew a tinny unrefined sound.
The technical benefits of new media to photojournalists in crisis zones are
  equivalent to unrefined digital omniscience.
Hoagland may be a bit undereducated and unrefined in his speaking style.
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