blah, chit-chat, meaningless talk intended to deceive
Frequenza
Pronunciato come (IPA)
/bla.bla/
Etimologia (Inglese)
The word is given as onomatopoeic or possibly related to blaguer by le Trésor de la langue française.
It appears in the French language in 1945 and could also be a borrowing from earlier English blah.