- not professional; not pertaining to or characteristic of a profession.
- at variance with or contrary to professional standards or ethics; not befitting members of a profession, as language, behavior, or conduct.
- not belonging to a profession; nonprofessional.
- not done with professional competence, as a play staged or an opera performed by amateurs; amateurish.
- Sports. nonprofessional(def 2).
- a person who is not a professional; amateur.
Origin of unprofessional
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unprofessional
His silence was “uncool and unprofessional,” as Dr. Tanning put it.My Therapist Dumped Me
April 4, 2014
Bonet had often clashed with creator Bill Cosby and was unprofessional backstage.How Awkward Will Isaiah Washington’s Return to ‘Grey’s Anatomy’ Be?
March 7, 2014
They felt it was unprofessional to leave one dollar bill behind.Why I Fear the Aryan Brotherhood—and You Should, Too
April 1, 2013
I guess it's unprofessional to hope people's houses burn down, but let's at least wish a parking ticket on them.The House Vote on Sandy
January 4, 2013
They were lazy, unprofessional, and always late to formation or absent entirely.One Eye on Our Allies: The Overdue Talk About Afghan Insider Attacks
October 9, 2012
She was certainly, for one so young and so unprofessional, a magnificent reader.Ester Ried Yet Speaking
There was no use in trying this through any unprofessional channels.Roland Cashel
Charles James Lever
Nowhere else in the world could one expect to figure in a rôle so unprofessional.The Education of Henry Adams
You aint so unprofessional as to remember all that silliness against me, are you?
There are forty ways of writing in an unprofessional manner, and they are all good.Mental Efficiency
- contrary to the accepted code of conduct of a profession
- not belonging to or having the required qualifications for a profession
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for unprofessional
Online Etymology Dictionary, © 2010 Douglas Harper