What is another word for not professional?
Pronunciation: [nˌɒt pɹəfˈɛʃənə͡l] (IPA) 
The term "not professional" implies a lack of skill, knowledge, or experience in a given field. Some synonyms for this phrase include unskilled, amateurish, unprofessional, untrained, inept, and incompetent. These words often connote a sense of inadequacy or inexperience and can be used to describe someone who is not qualified to perform a particular job or task. Other similar terms may include clumsy, awkward, bungling, or ham-handed, signifying a lack of finesse or proficiency. Using these synonyms can help convey the meaning of an individual or situation that is characterized by a lack of professionalism.
