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"They are the expert on regulations" vs "They are the expert in regulations"

Both phrases are commonly used and correct in English. The choice between 'in' and 'on' depends on the context and personal preference. 'In regulations' suggests a deeper knowledge or involvement, while 'on regulations' is more general.

Last Updated: March 22, 2024

They are the expert on regulations

This phrase is correct and commonly used in English.

This phrase is also used to indicate expertise in regulations, but it may imply a more general or surface-level knowledge compared to 'in regulations.'

Alternatives:

  • they are the expert on regulatory matters
  • they are the expert on compliance regulations
  • they are the expert on legal regulations
  • they are the expert on government regulations

They are the expert in regulations

This phrase is correct and commonly used in English.

This phrase is used to indicate that someone is highly knowledgeable or specialized in the field of regulations.

Alternatives:

  • they are the expert in regulatory matters
  • they are the expert in compliance regulations
  • they are the expert in legal regulations
  • they are the expert in government regulations

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