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Prepositions after verbs

How to use "overlook" correctly

Overlook normally does not take by or in directly after it. The correct structure depends on the meaning and sentence pattern.

Quick answer

"Overlook by" is usually incorrect

Use overlook without a preposition when it means fail to notice. In can appear in phrases such as overlooked in the report, where in introduces the place where something was missed. By is common only in the passive form overlooked by someone.

We overlooked a major error
Several details were overlooked in the review
The warning was overlooked by management

Choose the pattern by meaning

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

1
overlook + object

What was not noticed?

Overlook usually takes a direct object without a preposition.

The editor overlooked the typo
They overlooked an important clue
2
overlooked in + document/place

Where was something missed?

In introduces the document, process, or place where the omission happened.

The issue was overlooked in the final report
Several names were overlooked in the database
3
overlooked by + person/group

Who failed to notice something?

By appears in passive structures to identify the person or group.

The risk was overlooked by the auditors
The error had been overlooked by everyone

See the difference in context

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

Construction
Example
Meaning
overlook by
The problem was overlooked by the team.
Correct only in passive structures where by names the agent.
overlook in
The detail was overlooked in the article.
In shows where the omission occurred.
overlook + object
She overlooked a key fact.
Standard active pattern without a preposition.

Common mistakes

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

Adding "by" after active overlook

Do not use by directly after active overlook.

✕ They overlooked by a small mistake. ✓ They overlooked a small mistake.

Using "in" instead of a direct object

Overlook usually takes the thing missed as a direct object.

✕ She overlooked in the spelling error. ✓ She overlooked the spelling error.

Confusing passive and active structures

Use by only when the sentence is passive.

✕ The manager overlooked by the issue. ✓ The issue was overlooked by the manager.

Quick practice

Choose the expression that matches the intended meaning.

1. The inspector overlooked ___ serious defect.
2. Several mistakes were overlooked ___ the report.
3. The warning signs were overlooked ___ staff.

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Frequently asked questions

Is "overlook by" correct?

Only in passive sentences such as overlooked by the committee.

Can I say "overlook in"?

Yes, when in introduces the place or document where something was missed.

Does overlook need a preposition?

Usually no. The verb normally takes a direct object, such as overlook a mistake.

oblige-to-by-with-in, for obscure by, for, from, in or to? observe in, by, on, with or for? "obsess about" or "obsess over"? "obtain from" or "obtain by"? occupy by, with, in, for or at? occur in, to, at, on or during? offend by, at, in, against or with? "offer by" or "offer to"? offset by, from, with, for or against? "omit from" or "omit by"? "open in" or "open to"?

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