transcription, транскрипция: [ ʌnprəfeʃən(ə)l ]
If you use unprofessional to describe someone’s behaviour at work, you are criticizing them for not behaving according to the standards that are expected of a person in their profession.
What she did was very unprofessional. She left abruptly about 90 minutes into the show...
He was also fined $150 for unprofessional conduct.
≠ professional
ADJ [ disapproval ]