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Prepositions with input

Of input or for input?

Input often combines with for when requesting opinions or data, and with of in descriptive phrases such as source of input.

Quick answer

How to use of and for with input

Use for input when asking for advice, feedback, or information. Use of input in noun phrases such as source of input or amount of input.

The manager asked for input from the team.
We need more input for the final report.
The survey is a useful source of input for researchers.

Choose the pattern by meaning

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

1
ask for input

Requesting opinions or information

Use for when requesting suggestions, comments, or data.

The designer asked for input on the new logo.
Teachers invited parents for input about the schedule.
2
input for + purpose

Showing how input will be used

Use for to explain the task, project, or decision that needs input.

We collected input for the budget review.
The committee needs input for future planning.
3
source of input

Describing origin or type

Use of after nouns that describe quantity, source, or value.

Customers are an important source of input.
The amount of input was overwhelming.

See the difference in context

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

Construction
Example
Meaning
for input
The director asked for input before the meeting.
Standard when requesting advice or information.
input for
We need input for the presentation.
Standard when input is intended for a specific purpose.
of input
The quality of input affects the results.
Standard in descriptive noun phrases.
input of
the input of experts
Possible in formal contexts meaning contribution by experts, but expert input is usually more natural.

Common mistakes

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

Using of after ask

Ask is followed by for before input.

✕ They asked of input. ✓ They asked for input.

Confusing source of input with source for input

Source normally takes of before input.

✕ a source for input ✓ a source of input

Using input of for purpose

Use input for when showing intended use.

✕ input of the report ✓ input for the report

Using too many nouns together

Long noun chains with input can sound unclear.

✕ customer market strategy input ✓ customer input on marketing strategy

Quick practice

Choose the expression that matches the intended meaning.

1. The team asked ___ input from users.
2. We need input ___ the new policy.
3. The amount ___ input surprised everyone.

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Frequently asked questions

What does ask for input mean?

It means requesting opinions, suggestions, or information from others.

Can input for describe a purpose?

Yes. Input for the report means input intended to help create the report.

Is input of experts correct?

It is grammatical in formal writing, but expert input is usually more natural.

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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