unprofessional
unp·ro·fes·sional
adjective
1.
not characteristic of or befitting a profession or one engaged in a profession
- “described in unprofessional language so that high school students could understand it”
- “was censured for unprofessional conduct”
- “unprofessional repairs”
Origin
From un- + professional.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.