DictionaryblahBoredom or dismissal
interjection / noun / adjective

blah

BLAH/blˈɑ/

Dull and lacking interest or meaning.

The endless presentation leaves everyone feeling blah by the afternoon break.

A bored young woman rests her cheek in one hand and makes a small dismissive wave while a man beside her continues talking with an open-handed gesture.
Etymology

Blah probably imitates empty talk and is recorded as meaning “idle, meaningless talk.” Its related adjective means “dull,” matching its use to express boredom or dismissal.

In context

AllEars.net14:25
go that way. You're going to pass Toy Story Land, blah blah blah.
The SHOCKING RULES Disney World Cast Members Have to Follow -- Former Cast Member Tells All

More examples

  • The speech was full of empty blah.
  • Blah,” she says, dismissing the familiar excuse.
  • The room looks rather blah without any color.

Similar words

dull
Uninteresting without the informal expressive tone.
listless
Lacking energy, matching the personal-state use rather than empty talk.