1. subprofessional - Noun
2. subprofessional - Adjective
subprofessional (comparative more subprofessional, superlative most subprofessional)
Not meeting the quality standards expected of a professional.
His subprofessional workmanship led me to decide to never hire him again.
subprofessional (plural subprofessionals)
A person working at less than professional level.