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Prepositions with nouns

For replacement or of replacement?

For replacement is common when something needs to be replaced. Of replacement appears in more limited formal noun phrases.

Quick answer

Which preposition is used with replacement?

Use for replacement when an item is intended to be replaced. Use of replacement in phrases such as cost of replacement or process of replacement. English also commonly uses replacement of something.

The battery is due for replacement.
We calculated the cost of replacement.
The replacement of old pipes began last year.

Choose the pattern by meaning

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

1
for replacement

Items needing a new version

Use for replacement to describe things scheduled to be replaced.

Several windows are marked for replacement.
2
cost of replacement

Talking about expense or process

Of replacement appears after nouns such as cost, method, or timing.

The cost of replacement was very high.
3
replacement of + thing

Describing the replacing action

Replacement of is a common structure when replacement is the main noun.

The replacement of aging equipment improved safety.

See the difference in context

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

Construction
Example
Meaning
for replacement
This part is ready for replacement.
scheduled or intended to be replaced
of replacement
The cost of replacement exceeded the budget.
connected with replacement
replacement of
The replacement of staff caused delays.
the act or process of replacing

Common mistakes

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

Using of replacement as a standalone modifier

Of replacement usually follows another noun such as cost or method.

✕ The machine is of replacement. ✓ The machine is for replacement.

Forgetting of after replacement

When naming what is replaced, use replacement of.

✕ The replacement the roof took a week. ✓ The replacement of the roof took a week.

Quick practice

Choose the expression that matches the intended meaning.

1. The old servers are scheduled ___ replacement.
2. The cost ___ replacement was lower than expected.
3. The replacement ___ damaged cables improved performance.

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Frequently asked questions

Is for replacement used in technical English?

Yes. It is common in maintenance and engineering contexts.

Can I say replacement for something?

Yes. Replacement for often refers to a substitute item, as in a replacement for the missing key.

What is the difference between for replacement and replacement of?

For replacement describes status or intention, while replacement of describes the actual process or action.

for, admission, of, admission "for adoption", "of adoption" or "to adoption"? "for answer" or "of answer"? "for approval" or "of approval"? for, at, after, to or before lunch? "for breakfast" or "after breakfast"? "for collection" or "of collection"? "for dad" or "with dad"? for, during, in, of or with period? "for enforcement" or "of enforcement"? "for examination" or "of examination"? "for generation" or "of generation"?

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