The term "amateurish painting" refers to a painting that lacks professional quality or skill. Some synonyms for this term include unprofessional painting, poor quality painting, novice painting, beginner painting, or amateur painting. Other words that may apply include crude, rough, clumsy, unskilled, or unpolished. These words suggest that the painter did not have the necessary proficiency to create a high-quality piece of work. While these may be seen as negative descriptions, it is important to remember that every painter starts as a beginner and improves with practice and experience. Personal expression and enjoyment of the art form are also essential elements that should not be discounted.