An amateur is generally considered a person who pursues a particular activity or field of study Since amateurs often lack formal training, some amateur work may be considered sub-par. For example, amateur athletes in sports such as.
The word amateur is normally used to mean: somebody who does something ( e.g. a A professional is someone who has had formal training for something.
Recently, I read a review that referred to me as an "amateur". Amateurs often have little or no formal training in their pursuits, and many are.