Words similar to unprofessional

Example sentences for: unprofessional

How can you use “unprofessional” in a sentence? Here are some example sentences to help you improve your vocabulary:

Doctors and dentists should expose without fear or favour, before the Medical and Dental Council of Nigeria either directly or through the Nigerian Medical Association, any corrupt, dishonest, unprofessional or criminal act or omission on the part of any doctor or dentist.”
My reaction while reading it was to be embarrassed for SLATE, because the whole feature smells like a juvenile attempt to slam a competitor via the most unprofessional means.
Media institutions that pay for information--the paper and TV tabloids--are branded sleazy and unprofessional.