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Proficient in vs Proficient at

Both 'proficient in' and 'proficient at' are correct and commonly used phrases in English. They are often interchangeable, but 'proficient in' is more commonly used when referring to skills or knowledge related to a particular subject or field, while 'proficient at' is more commonly used when referring to specific tasks or activities.

Last updated: March 17, 2024 • 1992 views

Proficient in

This phrase is correct and commonly used in English, especially when referring to skills or knowledge related to a particular subject or field.

Use 'proficient in' when talking about skills, knowledge, or expertise in a specific subject or field.

Examples:

  • She is proficient in English grammar.
  • He is proficient in computer programming.
  • They are proficient in mathematics.
  • Jan 10, 2019 ... "Proficient in" is generally used when discussing a subject area: "proficient in science", "proficient in auto mechanics", etc.
  • ... Proficient in grade 4 reading compared to 2019. In 2022, the percentages of fourth-grade students who performed at or above NAEP Proficient in reading were ...

Alternatives:

  • skilled in
  • knowledgeable in
  • adept in

Proficient at

This phrase is correct and commonly used in English, especially when referring to specific tasks or activities.

Use 'proficient at' when talking about being skilled or competent in performing specific tasks or activities.

Examples:

  • She is proficient at playing the piano.
  • He is proficient at public speaking.
  • They are proficient at problem-solving.
  • Jan 11, 2012 ... If you meant he was skilled in understanding and working with English people, you'd have to say "proficient at working with English people".
  • He has become very proficient at computer programming. She is proficient in two foreign languages. With this system, a large pool of teachers are asked to ...
  • Neither of us was proficient at using a saw and we'd managed only two rungs when exhaustion caught up with us and the light faded for permanently. While the  ...
  • May 20, 2008 ... I always find "proficient in a language" and "skilled in a language" but at times I find examples with "proficient at doing" and "skilled at doing"

Alternatives:

  • skilled at
  • competent at
  • adept at

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