Unprofessional behavior is a term used to describe actions or attitudes that are not appropriate in a professional setting. Some synonyms for unprofessional behavior include improper conduct, unethical behavior, inappropriate actions, and unacceptable behavior. Other synonyms include misconduct, breach of etiquette, unbecoming behavior, disorderly conduct, and discourteous behavior. Regardless of the synonym used, unprofessional behavior is generally seen as a negative quality that can damage relationships and lead to workplace problems. It is important for employees to be aware of what constitutes unprofessional behavior so that they can avoid it and maintain a positive and respectful work environment.