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A small grunt used to agree with something, or to follow along with, used as an affirmative, or used to reinforce the previous statement.

Pronounced: "Rough", in the manner of a canine
"Dude, wanna go get some slurpies?"
"Ruugh"

or

"Thats coz you're gay... yeah ruugh"
by Michael Sloane November 12, 2007
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