A hasty or undetailed drawing or painting often made as a preliminary study. Traits include rough lines, monochrome or basic coloring, and left over structural shapes.
Not all pictures with these traits are considered sketches, such as post #2721361 and post #2722170. Posts with proper use of the sketch tag are post #2720851 and post #2722791.
Abbreviated on Pixiv as "rkgk", which comes from the Japanese word for sketch (落書き, rakugaki). Not all pictured tagged as "sketch" by the artist should be tagged as sketch on Danbooru. The picture must look like a sketch for it to apply. Translated tags have been removed from this wiki, because artists tend to use this tag in a very misleading way.
Sketches are not sufficient reasons for flagging. See howto:flag.
The following tags are aliased to this tag: rough and rough_sketch (learn more).