Prepositions after verbs

Reverse with in and by

Reverse does not usually require a fixed preposition. In and by can appear in separate meanings such as amount, method, or location.

Quick answer

How is reverse used with prepositions?

Reverse often takes a direct object, as in reverse a decision. Reverse by can describe amount or method. Reverse in usually introduces an area or category where a change happens, not a fixed complement.

reverse the policy immediately
Sales reversed by 10 percent after June
The trend reversed in Europe last year
The court reversed the ruling

Choose the pattern by meaning

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

1
reverse + object

Changing something to the opposite

Reverse commonly takes a direct object without a preposition.

They reversed the decision
The company reversed the price increase
2
reverse by + amount/method

Describing degree or means

By can show how much something changes or the method used.

Profits reversed by 5 percent
The image was reversed by software
3
reverse in + area/context

Explaining where a change happens

In introduces the place or field where something reverses.

The decline reversed in several markets
Temperatures reversed in the afternoon

See the difference in context

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

Construction
Example
Meaning
reverse in
The pattern reversed in coastal areas.
in introduces the area or context of the change
reverse by
Output reversed by 15 percent.
by introduces amount or method
reverse + object
The judge reversed the verdict.
standard transitive use without a preposition

Common mistakes

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

Adding unnecessary prepositions

Reverse often works directly with an object.

✕ They reversed on the decision. ✓ They reversed the decision.

Using by for location

By does not normally introduce the place where reversal happens.

✕ The trend reversed by Europe. ✓ The trend reversed in Europe.

Using in before a direct object

Do not insert in between reverse and its object.

✕ She reversed in the rule. ✓ She reversed the rule.

Confusing reverse with return

Reverse means change direction or undo, not go back physically.

✕ He reversed to home. ✓ He returned home.

Quick practice

Choose the expression that matches the intended meaning.

1. The company reversed ___ earlier decision.
2. The decline reversed ___ Asia during the summer.
3. Production reversed ___ 8 percent last quarter.

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Frequently asked questions

Does reverse usually need a preposition?

No. Reverse commonly takes a direct object, such as reverse a decision.

Is reverse by correct?

Yes, when by introduces amount or method.

Can reverse in be used?

Yes, when in adds context or location, such as reversed in Europe.

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