When uttered in The Demented Cartoon Movie, this word causes one to lose his or her head.
by Baha May 16, 2005
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a word to describe something you don't like doing
I just got back from buying groceries, now doing laundry.. blah
by downhill_druid January 4, 2010
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Blah is defined as a belief of complete emptyness in Instant messages like AIM when its really full of emotions that the individual is afraid to realize because they feel that they need to hide their emotions because they dont feel its right to say them at the time; or the fact that they might have hid it from themselves for what they felt was their own good
John: So what do you think about me right now as more than a friend?
Elizabeth: Uhhh; Blah. . .
John: What is that to mean?
Elizabeth: Nothing at all it means its i dont know what it means

Elizabeth loved me the whole time just hid it from herself
by John Wagenaar March 14, 2006
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that time of month. the feeling a woman has when she starts her period and has no energy.
Amy: Sarah, you want to go horseback riding?
Sarah: No thanks Amy, I've got the blahs..

Amy: Oh.... Gottcha
by blah February 19, 2015
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When words fail, Blah speaks.
Teacher: Whats the answer to number 5, Matt.
Matt: Blah

Teacher is writing on the board in math class, room is filled with silence. Because words have failed the young students, a lone peer named Keith states the immortal term aloud "Blah!!"
by Patrick Hampton January 26, 2015
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