書かきなぐる

godan verb (-ru), transitive verb

scribble down; dash off; write quickly and roughly

Implies writing in a hurried, careless, or rough manner, often with a sense of urgency or lack of polish.

• 彼かれはメモを書かきなぐった。

  He scribbled down a memo.

• アイデアを忘わすれないように、ノートに書かきなぐった。

  I dashed off my ideas in a notebook so I wouldn't forget them.