na-adjective
approximate; rough
Used for numbers, calculations, or estimates that are not precise. Often carries a casual tone.
from English about
アバウトな数字でいいから教えて。
Just give me a rough number.
彼の計画はいつもアバウトだ。
His plans are always approximate.
na-adjective
Describes a person or their work as careless, imprecise, or half-hearted. Often negative.
あの人の仕事はアバウトすぎる。
That person's work is too sloppy.
アバウトな性格だから細かいことは気にしない。
He has a lackadaisical personality, so he doesn't sweat the small stuff.