pro ‧ fi ‧ cien ‧ cy /prəˈfɪʃ ə nsi/ BrE AmE noun [uncountable]
a good standard of ability and skill
proficiency in/with/at
a high level of proficiency in English
Nick’s proficiency with computers is well known.
pro ‧ fi ‧ cien ‧ cy /prəˈfɪʃ ə nsi/ BrE AmE noun [uncountable]
a good standard of ability and skill
proficiency in/with/at
a high level of proficiency in English
Nick’s proficiency with computers is well known.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012