Barbouillage is a French word that means an imperfectly executed drawing or painting. It may also refer to a scribble or a mess made by ink or paint. There are several synonyms for the word barbouillage that can be used in both French and English. Some examples include 'smudge', 'smear', 'blot', 'stain', 'scrawl', 'scribble' and 'doodle'. These words can be used in various contexts, from describing a child's artwork to commenting on a professional artist's messy work. By using these synonyms, one can effectively convey the meaning and intent of barbouillage.