A person with bad personal hygeine, has oily hair, or dirty fingernails, or yellow teeth for example.
I cant believe he's dating her, she's so Smetty my dog wouldn't even sit next to her,
by Amy B May 17, 2007
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contraction of the words smart and pretty
-that girl is really pretty and she knows a lot about science.

- She is a real smetty girl
by Sensasion July 15, 2012
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Smelly and Sweaty at the same time
My T Shirt is Really Smetty which is smelly and sweaty
by Smetty 2 January 10, 2015
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After a long, gruelling day at work, Mark realized he had a case of smetty balls.

"Hey hunny, smell my fingers!"
"Hell no, you just scratched your balls!"
"Oh come on, just smell them!"
*sniff*
"OMFG dude you have some rauchy, smetty balls! Go take a shower you nasty freak!"
by Illusive Zee April 29, 2006
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the mix of the words smart and pretty
wow, the person got an A+ they are so pretty aswell. they are so smetty.
by smetty1234567890 April 7, 2022
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