blah
noun
[ blɑː ]
• used to refer to something which is boring or without meaningful content.
• "the first 20 pages are a lot of blah about budgets and stuff like that"
• depression.
• "a case of the blahs"
blah
adjective
• dull or unexciting.
• "the game has been very blah"
blah
exclamation
• used to substitute for actual words in contexts where they are felt to be too tedious or lengthy to give in full.
• "he said nations great and small could come together to blah blah blah"
Origin:
early 20th century (originally US): imitative.