Someone (or something) that has hidden exceptional characteristics and/or future potential, but currently lacks the final touches that would make them (or it) truly stand out from the crowd.

The phrase is metaphorical and relates to the fact that naturally occurring diamonds are quite ordinary at first glance, and that their true beauty as jewels is only realized through the cutting and polishing process.
She may seem shy and ordinary right now, but give her a couple more years - she truly is a diamond in the rough.
by Ainz January 24, 2006
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a person who appears dubious at first but turns out to be exceptional
She thought he looked like a geek at first but he turned out to be a diamond in the rough.
by Light Joker February 14, 2007
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One whose worth lies far within
Only one may enter here. One whose worth lies far within. The diamond in the rough.
by sanchopancho02 June 21, 2021
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1. A good athlete that was either undrafted or chosen late in the draft
2. Someone good at something that hangs out with bad people who are bad at it
1. Ben Wallace, an undrafted basketball player has been named defensive player or the year.
2. The lead singer Michael, was the diamond in the rough in the garage band
by Tore a Bore a May 30, 2004
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A sexual act involving a married woman inserting a diamond ring in the ass.
Your wife's ring doesn't shine quite the same way after she gave me the diamond in the rough last night.
by Flip189 July 26, 2006
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1. Person - When a person has some hidden talent or characteristic or personality trait that is not immediate seen. But once you learn more about this person you see how much they are really worth.

2. Thing - Something that does not seem to be worth paying attention to but has a hidden quality that is not immediately seen.
Person- GUY 1 - "Man that girl is 350 lbs but is an expert pole dancer" GUY 2 - "Yeah shes diamonds in the rough"

Thing- GUY 1 - "Man this game is so old it's from 1981 who would want to play this" GUY 2 - "Yeah but man this is the original Donkey Kong it's priceless".
by Hotpantsbadboy June 21, 2014
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The person that is the equivalent to a diamond in the middle of all the bad things.
Harry is my diamond in the rough.
by LACIENBRAN October 16, 2012
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