blah
/blɑː/
noun
Unwohlsein, Trübsinn
interjection
Bla, blabla, dummes Gerede
(When spoken repeatedly, often three times in succession: blah blah blah!) Imitative of idle, meaningless talk; used sometimes in a slightly derogatory manner to mock or downplay another's words, or to show disinterest in a diatribe, rant, instructions, unsolicited advice, parenting, etc. Also used when recalling and retelling another's words, as a substitute for the portions of the speech deemed irrelevant.
Mein Vater fing an, mir etwas über die Autopflege zu erzählen, aber nach "Ölstand prüfen, Reifen prüfen" war es nur noch Bla Bla Bla, ich habe nicht wirklich zugehört.
