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A non-word, which can be used to describe some feelings.
Person 1: I don't like you!
Person 2: Blahhhh
by Manadude2 October 18, 2007
Jacob Frederick's only vocabulary.
Taylor- "Hey jacob"

Jacob- "Blahhhhhhhhhhhhhh"
by Stacys Mom. July 07, 2010
1. word to discribe dislike

2.what you say when you dont know a word
that dirt cake was so blahhh!
by estefibanana September 20, 2011
Emily: "I know lol it's just blahhh."
by bertwilliams18 December 17, 2011