Proficient
/prɑˈfɪʃənt/
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Definition
(adj) Good at something; skilled; fluent; practiced, especially in relation to a task or skill.
Sentence Examples
He is proficient in English.
Proficient in English, he is looked on as a good teacher.
CEFR Practice Quiz
She became highly ____ in data analysis after completing an intensive six-month training program.