Preposition after verb

Exert on or exert by?

Exert is commonly followed by on when talking about force, pressure, or influence. Exert by is not a normal verb-preposition combination.

Quick answer

Which preposition is used with exert?

Use exert on when describing pressure, force, or influence affecting someone or something. Exert by is generally not idiomatic as a fixed pattern.

The new law will exert pressure on small businesses.
Parents often exert influence on their children.
The result was achieved by exerting constant effort.

Choose the pattern by meaning

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

1
exert pressure on + target

Applying pressure or force

Exert on is standard when the object affected follows on.

They exerted pressure on the committee.
The army exerted force on the border region.
2
exert influence on + person/group

Affecting decisions or behaviour

Use exert influence on for social, political, or personal influence.

Advertising can exert influence on consumers.
She exerts a strong influence on her team.
3
by exerting + noun

Showing method or means

By introduces the method and is not directly selected by exert.

They succeeded by exerting steady pressure.
He solved the problem by exerting more effort.

See the difference in context

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

Construction
Example
Meaning
exert on
The policy exerts pressure on local schools.
Standard pattern for force, pressure, or influence affecting something.
exert by
The team won by exerting constant effort.
By introduces method; exert by is not a fixed verb-preposition combination.
exert influence over
The company exerts influence over the market.
Over is also common with influence when showing control.

Common mistakes

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

Using exert by as a direct combination

Exert is not normally followed directly by by.

✕ They exerted by the workers. ✓ They exerted pressure on the workers.

Omitting on after pressure or influence

Pressure and influence usually take on before the affected target.

✕ The rules exert pressure employees. ✓ The rules exert pressure on employees.

Quick practice

Choose the expression that matches the intended meaning.

1. The campaign exerted pressure ___ the government.
2. She succeeded by ___ more effort.
3. The manager exerts influence ___ the team.

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Frequently asked questions

Can exert be used without a preposition?

Yes. You can say exert pressure, exert force, or exert influence.

Is exert by correct English?

Not as a fixed verb-preposition combination. By normally introduces method, as in by exerting effort.

What nouns commonly follow exert?

Common nouns include pressure, force, influence, control, and effort.

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