Someone who is very forgetful, unfocused, or disorganized. Sorry for forgetting about your recital. I've been such a scatterbrain, lately! We used to have a total scatterbrain managing our accounts, so things were all over the place for a while.

What does scatterbrain mean?

informal. : a person who is forgetful, disorganized, or unable to concentrate or think clearly The English, who had raised eccentricity and poor organization to a high art, and placed the scatterbrain on a pedestal, loathed such Middle European things as rules, conventions, and dictatorships.—

Is scatterbrain a slang?

Well, “scatterbrained” refers to someone who is forgetful, disorganized, or that has trouble concentrating. So, we can describe a person who is like this using the adjective, “scatterbrained.” And we can also use the noun “scatterbrain” to talk about a person in this way, as well.