unprofessional
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adj. 1. contrary to professional etiquette; unbecoming in members of a profession.
Ex. It would be unprofessional for a doctor to speak publicly of a patient's personal problems.
2. not having to do with or connected with a profession.
unprofessional
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adv. unprofessionally.
unprofessional
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noun a person who is not a professional.
Ex. The secret of his failure in politics ... is that he was really an unprofessional (New York Times).
unprofessional
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unprofessional, adjective, noun.