unprofessional Meaning in the Cambridge English Dictionary
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Meaning of “unprofessional” in the English Dictionary

"unprofessional" in British English

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unprofessionaladjective

uk   us   /ˌʌn.prəˈfeʃ.ən.əl/
C1 not ​showing the ​standard of ​behaviour or ​skill that is ​expected of a ​person in a ​skilledjob: Doctor Rivers was ​charged with unprofessional ​conduct and ​improper use of ​dangerousdrugs.
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unprofessionally
adverb uk   us   /-i/
(Definition of unprofessional from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"unprofessional" in American English

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unprofessionaladjective

 us   /ˌʌn·prəˈfeʃ·ə·nəl/
not ​showing the ​standard of ​behavior or ​skills that are ​expected of a ​person in a ​skilledjob: Dressing like that was very unprofessional of him.
(Definition of unprofessional from the Cambridge Academic Content Dictionary © Cambridge University Press)

"unprofessional" in Business English

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unprofessionaladjective

uk   us   /ˌʌnprəˈfeʃənəl/
not showing the ​standard of ​behaviour or ​work that is expected of a ​person doing their ​job: unprofessional behaviour/conduct Two ​employees have been ​suspended after ​allegations of unprofessional ​behaviour. The ​tribunalupheld her ​complaint that he had ​treated her in an unprofessional manner.
(Definition of unprofessional from the Cambridge Business English Dictionary © Cambridge University Press)
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