Translation of "proficient" - English-Japanese dictionary

proficient

adjective uk /prəˈfɪʃ·ənt/ us /prəˈfɪʃ·ənt/

very good at something

堪能な, 秀でた
She’s proficient in two languages.
I’ve become quite proficient at repairing bicycles.
proficiently adverb /prəˈfɪʃ·ənt·li/ /prəˈfɪʃ·ənt·li/

見事に, 巧みに

(Translation of “proficient” from the Cambridge English–Japanese Dictionary © Cambridge University Press)