Meaning of “proficiency” in the English Dictionary

business-english dictionary

"proficiency" in Business English

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proficiencynoun [ U ]

uk /prəˈfɪʃənsi/ us

great skill, ability, and experience:

proficiency in sth Candidates must be able to demonstrate a high level of proficiency in both languages.
academic/technical proficiency

(Definition of “proficiency” from the Cambridge Business English Dictionary © Cambridge University Press)