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Prepositions with nouns

Of, for, by, to or with consultant?

Consultant combines with several prepositions depending on role and relationship. Consultant to and consultant for are especially common in professional contexts.

Quick answer

Which preposition is used with consultant?

Use consultant to for an official advisory role, consultant for for an area or organisation, and with a consultant when someone works together with one. Consultant of is uncommon in modern English. By a consultant describes who did something.

She is a consultant to the ministry.
He works as a consultant for a software company.
The patient spoke with a consultant before surgery.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
consultant to + organisation

Showing an advisory relationship

Use consultant to for a formal role advising a company, institution, or government body.

She became a consultant to the health department.
2
consultant for + field/company

Showing area of work or employer

Use consultant for to describe the sector, project, or organisation connected to the role.

He is a consultant for an energy firm.
3
with a consultant

Showing collaboration or contact

Use with when someone meets or works together with a consultant.

We discussed the plan with a consultant yesterday.
4
by a consultant

Identifying who performed an action

By introduces the person responsible for a report, review, or recommendation.

The audit was completed by a consultant from London.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
consultant to
He is consultant to the mayor.
formal advisory role
consultant for
She works as a consultant for a bank.
professional connection or field
with a consultant
The team met with a consultant.
collaboration or discussion
by a consultant
The report was written by a consultant.
shows the agent of an action
consultant of
They appointed him consultant of the project.
generally nonstandard or old-fashioned in modern English

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using consultant of in modern professional English

Consultant to or consultant for is usually more natural.

✕ She is consultant of the company. ✓ She is consultant to the company.

Confusing consultant to and consultant with

Consultant to describes a role; with describes interaction.

✕ He works with the ministry as a consultant with the ministry. ✓ He works as a consultant to the ministry.

Quick practice

Choose the expression that matches the intended meaning.

1. She serves as a ___ the university.
2. We met ___ before approving the plan.
3. The review was completed ___ from Berlin.

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Frequently asked questions

What is the difference between consultant to and consultant for?

Consultant to emphasizes an advisory relationship, while consultant for often refers to employment or field.

Is consultant of correct?

It is uncommon and usually avoided in modern English.

Can I say speak with a consultant?

Yes. With is natural for meetings and discussions.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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