A rapidly executed freehand drawing that is not intended as a finished work, often consisting of a multitude of overlapping lines.

A rough design, plan, or draft, as a rough draft of a book.

A brief description of a person or account of an incident; a general presentation or outline.

To make a brief, basic drawing.

“I usually sketch with a pen rather than a pencil.”

To describe briefly and with very few details.

“He sketched the accident, sticking to the facts as they had happened.”

Sketchy, shady, questionable.