verb / noun
scribble
SKRIB-uhl/ˈskrɪbl/
Hasty or careless writing or drawing.
The young adult scribbles hurried, tangled marks across the blank sheet.

Etymology
The proposed ancestor scribillare is a diminutive of “write,” matching the verb’s early sense of hurried, careless writing. It may instead be a native formation with a diminutive suffix; drawing tangled lines is a later extension.
In context
… have the the space and the opportunity on a blank page like this to just scribble down my thoughts and write them in a more coherent way
More examples
- Her signature is an unreadable scribble.
- The toddler scribbles across the paper with a crayon.
- He scribbled directions on a napkin before leaving.
Forms
scribble · scribbles · scribbled · scribbling
scribbler noun — A person who writes or draws carelessly.