unprofessionalismn.
/(ˌ)ʌnprəˈfɛʃn̩əlɪz(ə)m/, /(ˌ)ʌnprəˈfɛʃn̩l̩ɪz(ə)m/, /(ˌ)ʌnprəˈfɛʃənl̩ɪz(ə)m/, /(ˌ)ʌnprəˈfɛʃ(ə)nəlɪz(ə)m/, U.S. /ˌənprəˈfɛʃənəlˌɪz(ə)m/, /ˌənprəˈfɛʃnəˌlɪz(ə)m/ Lack of professionalism; unprofessional quality, character, or conduct.
ΘΚΠ
the world > action or operation > ability > inability > unskilfulness > [noun] > bad or rough workmanship > unprofessionalism
amateurship1812
amateurism1824
amateurishness1846
unprofessionalism1893
1893 Merck's Bull. Med. & Surg. Apr. 297/1 It is the duty of every truly professional man, to do what he can, to stamp out this Incarnation of Unprofessionalism.
1955 A. L. Rowse Expansion of Elizabethan Eng. 382 The clue to English ill-success was, as usual, amateurishness, unprofessionalism, in the beginning.
2012 Church Times 27 Apr. 16/4 I deplore the unprofessionalism of those senior clergy who sometimes speak inappropriately and cavalierly of their experiences.
This entry has been updated (OED Third Edition, December 2014; most recently modified version published online December 2021).
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n.1893