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Prepositions with efficiency

Of efficiency, for efficiency, or in efficiency

Efficiency appears with different prepositions depending on meaning. For efficiency is common when expressing purpose. In efficiency is used with areas or fields. Of efficiency is limited and usually appears in longer noun phrases.

Quick answer

Which preposition should you use with efficiency?

For efficiency is common when talking about purpose or improvement. In efficiency is natural when referring to a field or area, such as efficiency in production. Of efficiency is less common and usually appears in formal noun phrases such as measures of efficiency.

The team redesigned the process for efficiency.
We saw major gains in efficiency last year.
The report included measures of efficiency.

Choose the pattern by meaning

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

1
for efficiency

Expressing purpose or goal

Use for efficiency when something is done to improve efficiency or because efficiency is important.

The software was updated for efficiency.
They reorganized the warehouse for efficiency and safety.
2
efficiency in + area

Talking about performance in a field

Use in after efficiency to name the area, activity, or system being discussed.

The company improved efficiency in production.
Researchers studied efficiency in energy use.
3
measure of efficiency

Referring to standards or indicators

Of efficiency appears in noun phrases that describe types, measures, or levels of efficiency.

Speed is one measure of efficiency.
The study examined indicators of efficiency in public transport.

See the difference in context

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

Construction
Example
Meaning
for efficiency
The office layout was changed for efficiency.
Shows purpose or intended benefit.
in efficiency
There has been an improvement in efficiency.
Refers to the area or aspect that improved.
of efficiency
The report discussed measures of efficiency.
Used in formal noun phrases about standards or qualities.
efficient in
She is efficient in administrative work.
Uses the adjective efficient, not the noun efficiency.

Common mistakes

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

Using of efficiency as a general replacement

Of efficiency is limited and usually belongs in formal noun phrases.

✕ The system was designed of efficiency. ✓ The system was designed for efficiency.

Confusing in efficiency with inefficiency

In efficiency and inefficiency are different forms.

✕ The company suffers from in efficiency. ✓ The company suffers from inefficiency.

Using efficiency for a field name

After efficiency, English often uses in before the activity or area.

✕ The project improved efficiency production. ✓ The project improved efficiency in production.

Quick practice

Choose the expression that matches the intended meaning.

1. The factory introduced automation ___ efficiency.
2. We noticed a sharp increase ___ efficiency.
3. The report included several measures ___ efficiency.

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Frequently asked questions

Is for efficiency natural English?

Yes. It commonly expresses purpose, especially in business and technical contexts.

Can I say in efficiency?

Yes, but usually as part of a phrase such as improvement in efficiency or efficiency in production. Do not confuse it with inefficiency.

Is of efficiency common?

It is more limited and mainly appears in formal noun phrases such as measures of efficiency or levels of efficiency.

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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