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"an expert in" vs "an expert at"

Both 'an expert in' and 'an expert at' are correct and commonly used in English. They are interchangeable in many contexts, but 'an expert in' is more commonly used when referring to a specific field or subject, while 'an expert at' is often used when referring to a skill or activity.

Last Updated: March 17, 2024

an expert in

This phrase is correct and commonly used in English, especially when referring to a specific field or subject.

Use 'an expert in' when referring to a specific field, subject, or area of expertise. For example, 'She is an expert in neuroscience.'

Examples:

  • He is an expert in computer programming.
  • She is an expert in marketing strategies.
  • They are experts in environmental science.

Alternatives:

  • a specialist in
  • proficient in
  • knowledgeable in
  • skilled in
  • well-versed in

an expert at

This phrase is correct and commonly used in English, especially when referring to a skill or activity.

Use 'an expert at' when referring to a skill, activity, or task. For example, 'He is an expert at playing the piano.'

Examples:

  • She is an expert at public speaking.
  • He is an expert at problem-solving.
  • They are experts at organizing events.

Alternatives:

  • skilled at
  • proficient at
  • adept at
  • talented at
  • excellent at

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