he is an expert of vs he is an expert on

Both 'he is an expert of' and 'he is an expert on' are commonly used phrases, but 'he is an expert on' is more widely accepted and preferred in English. 'He is an expert of' is less common and may sound awkward to native speakers.

Last updated: March 22, 2024 • 4664 views

he is an expert of

'He is an expert of' is not a commonly used phrase in English and may sound awkward to native speakers.

The correct phrase to use is 'he is an expert on' when referring to someone's expertise in a particular subject or field.

Show examples from the web [+]

He is an expert in pies, concoctions...
He is an expert in sign language.
And I can tell you he is an expert at getting people off.
However, I must say that I hope his friend is a better journalist than he is an expert on the EU institutions.
I know that he is an expert in education and research and other such areas.
This is definitely an important report and it is good that you have asked Mr Monti to prepare it, as he is an expert in this area.
So this is an expert opinion.
Mr. Gunther is an expert businessman.
YBN Consult - Znalecký ústav, s.r.o. is an expert institute qualified to provide expert advice in economics and the building industry.
PROSCON - s.r.o. is an expert institute qualified to provide expert advice with respect to economics.
Nell is an expert in the field of radio controlled aircraft.
Her son Pete is an expert guide and tracker.
Dr. Mason is an expert on theories of extraterrestrial life.
Dr Madden is an expert in this area.
The priest there is an expert astrologer.
"A" is an expert at making other people look guilty.
This Dr. Grey is an expert on...
And Freddy is an expert at this.
Broadsky is an expert in close-quarter combat.
Paul is an expert on French wine.

Alternatives:

he is an expert on

he is an expert on

'He is an expert on' is the correct and widely accepted phrase in English.

Use 'he is an expert on' when describing someone's expertise in a specific subject or field.

Show examples from the web [+]

However, I must say that I hope his friend is a better journalist than he is an expert on the EU institutions.
May I thank Mr Varela Suanzes-Carpegna for this excellent report, he is an acknowledged expert on this subject - and also thank the honourable Members who have spoken on this debate and expressed their thanks for the work of the Commission.
He is an expert in pies, concoctions...
He is an expert in sign language.
And I can tell you he is an expert at getting people off.
I know that he is an expert in education and research and other such areas.
This is definitely an important report and it is good that you have asked Mr Monti to prepare it, as he is an expert in this area.
Dr. Mason is an expert on theories of extraterrestrial life.
This Dr. Grey is an expert on...
Paul is an expert on French wine.
Michael Hayden is an expert on secrets.
Nell is an expert on South America.
Tom is an expert on the subject.
The former mayor of Strasbourg is an expert on all this.
But we have somebody here who is an expert on weapons.
John Johnson is an eXpert on the prehistory of the American west coast.
NeoRecormon therapy is started by a doctor who is an expert on your condition.
I know this is a fact that Mrs Langenhagen is an expert on and has asked Parliament to deal with sympathetically in the past.
One of them is an expert on all SS procedure.
With regard to beef and veal, Mr Garot is an expert on the subject.

Alternatives:

he is knowledgeable about
he is skilled in
he is proficient in
he is well-versed in

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he is an expert of vs he is an expert on

he is an expert of

he is an expert on

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