unprofessionally
🇺🇸
/ˌʌnprəˈfeʃənəli/
🇬🇧
/ˌʌnprəˈfeʃənəli/
behaving in a way that is not suitable for a person's job or career
He was fired for behaving unprofessionally at work.
他因在工作中表现得不专业而被解雇。