Adj. Short for atrocious. When something is so awful and not even worth saying the full word, it's atrosh. It can be in description of a person, place or thing.
Did you see what she was wearing?

Yeah it was so atrosh. I wouldn't be caught dead in that.
by JK825 June 14, 2007
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To be awful, disgusting, off putting, embarrassing, hideous or otherwise displeasing. Deriving from root word "atrocious."
"Eugh i just coughed up a huge wad of phlegm."
"Kerry you're atroshe."
by Jerry844 May 12, 2010
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Like Atrocious, Atrosh-nah is simply and abreviated and more forceful term for horrible.
by Bevin February 11, 2004
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