unprofessionalun‧pro‧fes‧sion‧al /ˌʌnprəˈfeʃənəl◂/ adjective 
- In general, unprofessional conduct refers to any action that violates the rules or ethical code of the teaching profession.
- It is an unprofessional, time-consuming and inefficient way to use video recordings.
- It was just very unprofessional with the way he let me go.
- Running out was totally unprofessional, but she had acted purely on instinct.
- Similarly, unprofessional disclosures within the school may not be protected by the First Amendment.
- The grounds for dismissal most frequently mentioned in state laws include insubordination, incompetency, immorality, and unprofessional conduct.
- They would be signs of an unprofessional subjectivism and impressionism; in recent radical discourse they indicate an undesirable mystification.
- We were so unprofessional and defended like amateurs.
nounprofessionprofessionalprofessionalismadverbprofessionallyunprofessionallyadjectiveprofessional ≠ unprofessional
Johnson was fired for unprofessional conduct.—unprofessionally adverb