In a little time I made great proficiency in the business, and became a useful hand to my brother.
…to the top; and I would therefore offer it to the consideration of those who superintend the education of our youth, whether, since many of those who begin with the Latin quit the same after spending some years without having made any great proficiency, and what they have learnt becomes almost useless, so that their time has been lost, it would not have been better to have begun with the French, proceeding to the Italian, etc.; for, tho’, after spending the same time, they should quit…
There are no more uses of "proficiency" in the book.
Show samples from other sources
Not as well as my mother, but I’m pretty proficient."
Kiera Cass -- The Heir
Yvette was by far the most competent of my coworkers, and she and I would often work together on any electrical job requiring proficiency with tools.