General: sketch

A hasty or undetailed drawing or painting often made as a preliminary study.

Traits of sketches include rough lines, basic coloring, and left over structural shapes. If a picture does not have any of the latter please refrain from tagging it a sketch.

Sketches are usually seen in monochrome, greyscale, or spot color.

Abbreviated on pixiv as "rkgk", which comes from the japanese word for sketch (rakugaki).
Updated by Zenex about 9 years ago