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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.

“To put it bluntly,” Jackson continued, “the court could be ushering in an era of unprofessional and unsafe medical care administered by effectively unsupervised healthcare providers.”

From Slate • Mar. 31, 2026

Gould said there were "some instances" that the ECB regarded as "significantly unprofessional".

From BBC • Mar. 23, 2026

Foreign policy analysts would normally consider distraction to be a lazy and unprofessional explanation for major actions like wars, if not a symptom of paranoid conspiracy thinking.

From Salon • Mar. 14, 2026

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

The orchestra claimed that she was unreliable and unprofessional.

From "Blink" by Malcolm Gladwell