blah-blah
UK[ˌblɑː ˈblɑː]US[ˌblɑ ˈblɑ]
n
Meaningless or tedious talk; empty chatter.
interj
Used to represent the sound of someone talking at length without saying anything important.
Etymology
The term "blah-blah" is a 20th-century reduplication of the earlier nonsense word "blah," which emerged in American English around 1918. It is a classic example of onomatopoeia, formed to mimic the dull, repetitive sound of meaningless or boring speech. The reduplication intensifies the sense of tedious, endless chatter. Its journey from a simple imitative sound to a standard lexical item for empty talk illustrates how language creatively formalizes vocal impressions to fill semantic gaps.
Analysis
The word is a reduplication of the nonsense syllable "blah," used to imitate the sound of idle speech. It is an onomatopoeic formation with no distinct, separable morphemes in the modern sense.
Examples
I tuned out during the meeting; it was just a lot of corporate blah-blah.
"And then the policy framework... blah, blah, blah," he said, imitating the lecturer.
Ignore the technical blah-blah and just tell me what I need to do.