Kndog, 51

In English, blah is a word that is sometimes used as an expression for words or feelings where the specifics are not considered important to the speaker or writer. It is not often seen in formal writing, except when transcribing speech. It differs from a speech disfluency such as "um" or "er" in that blah is a word used deliberately to represent other words, rather than as an accidental or temporary interjection into speech. Blah is also used when the speaker cannot say what was intended. "Blah" is also mimed behind people's backs to suggest that they talk too much or that they talk about useless topics for no reason. The word "Blah" can also be used in a mocking or sarcastic tone.

"Blah" is a token word with no meaning of its own, usually used to il----rate generic, boring speech. It may be used to fill in blank space, or to replace another word or phrase. It's for this last purpose that blah is sometimes assumed to mean something negative because it is used to replace a word that may be unpleasant, but blah itself is neutral. If spoken aloud the tone can usually be used to determine the speaker's intent.