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Showing results for unprofessional. Search instead for unprofessionellster.
Definitions

unprofessional

[uhn-pruh-fesh-uh-nl] / ˌʌn prəˈfɛʃ ə nl /
ADJECTIVE
not done well or skillfully
Synonyms
STRONGEST
ignorant improper incompetent inefficient lax negligent unethical
WEAK
amateur amateurish inadequate inexperienced inexpert nonexpert unfitting unsuitable untrained unworthy
Antonyms
STRONGEST
able capable competent efficient expert good moral right
WEAK
experienced professional skilled

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Lakers star Luka Doncic was fined $50,000 on Tuesday for directing an “inappropriate and unprofessional gesture toward a game official” during the Lakers’ win over the New York Knicks on Sunday, the NBA announced.

From Los Angeles Times • Mar. 10, 2026

“Allow your boss to be the unprofessional one,” she says.

From MarketWatch • Feb. 28, 2026

Jaye, a TikTokker who recently started working for Girl Guiding, says she sometimes tries to suppress or "mask" her tics for fear of coming across as unprofessional.

From BBC • Feb. 27, 2026

Still, nothing was as odd as Bondi’s performance, which was unprofessional and combative.

From Salon • Feb. 13, 2026

Mainly because as each of us gets better and wiser in our particular areas of expertise, we have to toss everything and start over, deeming the old material to be childish and unprofessional.

From "Challenger Deep" by Neal Shusterman

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.