[blɑː], (Noun)

Definitions:
- used to refer to something which is boring or without meaningful content
(e.g: the first 20 pages are a lot of blah about budgets and stuff like that)

- depression
(e.g: a case of the blahs)


Phrases:

Origin:
early 20th century (originally US): imitative

[blɑː], (Adjective)

Definitions:
- dull or unexciting
(e.g: the game has been very blah)


Phrases:

Origin:
early 20th century (originally US): imitative

[blɑː], (Interjection)

Definitions:
- used to substitute for actual words in contexts where they are felt to be too tedious or lengthy to give in full
(e.g: he said nations great and small could come together to blah blah blah)


Phrases:

Origin:
early 20th century (originally US): imitative