adverb, noun or participle which takes 'suru'
absent-mindedly; vacantly; idly
Describes doing something without focus, or being in a daze. Often used with verbs like する, 立つ, 座る, or 見る. Related to ぼそっと but with a stronger sense of blankness.
See also: ぼそっと
He was staring vacantly out the window.
ぼさっとしないで、早く準備しなさい。
Stop daydreaming and get ready quickly.