They are the expert in regulations vs They are the expert on 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 • 686 views

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.

Show examples from the web [+]

Yes. Because you are the expert in computer law.
What I find interesting is that you are the experts in behavior but find nothing wrong with yours.
Are the experts in the field representatives of European governmental or non-governmental organisations?
You are the expert of spell fail.
You are the expert on all things Ancients.
Okay, you guys are the experts on the freaky cases.
Hold on, we are the experts.
Look here, you are the expert.
You, sir, are the expert on the subject.
Aigoo, you are the expert at falling.
You are the expert on artistes?
Your work is crucial to our job because you are the experts and we then sort out the political problems.
And we are the experts at giving people what they need, aren't we?
Am I to assume you are the expert?
His target is always the expert in the repsective discipline.
Me? You're the expert in this situation.
Nishioka is the expert in modern slang.
I'm not the expert in crime scene analysis.
You're the expert in singing.
Charlotte is the expert in that area.

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

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.'

Show examples from the web [+]

You are the expert on all things Ancients.
Okay, you guys are the experts on the freaky cases.
You, sir, are the expert on the subject.
You are the expert on artistes?
You are the expert of spell fail.
Hold on, we are the experts.
Yes. Because you are the expert in computer law.
Look here, you are the expert.
(3) to examine, with the help of the high level group of national experts on better regulation, how to solve pending methodological issues;
The group of high-level national regulatory experts (hereinafter the group) set up by Commission Decision 2006/210/EC [1] is a consultative group of high-level national experts on better regulation.
Aigoo, you are the expert at falling.
Your work is crucial to our job because you are the experts and we then sort out the political problems.
He's the expert on judging kisses.
Relationship advice from Holli Vavasour, the expert on boys.
And I guess you would be the expert on phony Bettys.
Well, you're the expert on walking out.
I guess you're the expert on emotions.
You're the expert on manufactured living.
You may not be the expert on this whole boy-girl thing.
MJ, you're widely considered to be the expert on talent.

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

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