unprofessionalismсуществительное Used mainly as an uncountable noun, occasionally countable in reference to specific acts.
Переводы
His blatant unprofessionalism cost him the promotion.
Его вопиющий непрофессионализм стоил ему повышения.
дилетантизмнесколько разговорное, подчёркивает любительский уровень Определения
The state or quality of being unprofessional; lack of professionalism. His blatant unprofessionalism cost him the promotion.
An unprofessional act, remark, or instance of conduct. The outburst was an unprofessionalism that embarrassed the entire team.