English
subprofessional
From sub- + professional.
A compound of sub- + professional
Proto-Indo-European *upó ‘up; from below’
Proto-Italic *supo ‘under’
Latin sub ‘under, beneath, below’
English sub-
Middle English professhennalle
English professional
Today it means
adj Not meeting the quality standards expected of a professional.
Language periods are conventional ranges, not dates for this word.
Etymograph / subprofessional