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Prepositions after adjectives

Useless for, to, or in?

Useless for refers to purpose, useless to refers to the person affected, and useless in refers to a situation or context.

Quick answer

How do you use useless with prepositions?

Use useless for when something cannot perform a task. Use useless to when something has no value to someone. Use useless in for situations where something does not help.

This key is useless for opening the door.
The instructions were useless to me.
That strategy is useless in emergencies.

Choose the pattern by meaning

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

1
useless for + purpose

Describing lack of function

For introduces the task or purpose something cannot serve.

The map is useless for hiking trails.
This tool is useless for heavy work.
2
useless to + person

Showing no benefit to someone

To identifies the person or group that gains no benefit.

The advice was useless to beginners.
These figures are useless to the committee.
3
useless in + situation

Describing ineffective contexts

In refers to situations, systems, or environments where something fails to help.

The old method is useless in modern factories.
Paper tickets are useless in this digital system.

See the difference in context

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

Construction
Example
Meaning
useless for
The device is useless for travel.
not suitable for a purpose
useless to
The information was useless to us.
not beneficial to someone
useless in
The technique is useless in large classes.
ineffective in a context
useless with
He is useless with tools.
with describes poor skill handling something, not the main adjective pattern

Common mistakes

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

Using for with people

For usually introduces a purpose, not the person affected.

✕ The guide was useless for me. ✓ The guide was useless to me.

Using to for activities

To identifies people or groups, not functions.

✕ This app is useless to editing photos. ✓ This app is useless for editing photos.

Confusing in and for

In refers to a situation or environment.

✕ The plan is useless for crowded cities. ✓ The plan is useless in crowded cities.

Quick practice

Choose the expression that matches the intended meaning.

1. The software is useless ___ graphic design.
2. The explanation was useless ___ the students.
3. That approach is useless ___ fast-moving situations.

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Frequently asked questions

Can useless to refer to objects?

Yes. For example: This charger is useless to me without an adapter.

Is useless in common in professional writing?

Yes. It often appears when discussing methods, systems, or strategies.

Can useless for be followed by an -ing verb?

Yes. For example: This software is useless for editing large files.

ubiquitous in, on, across, throughout or for? "ugly in", "ugly for" or "ugly of"? ultimate in, of, for, on or as? "unacceptable to", "unacceptable in" or "unacceptable for"? unaccounted for unaccustomed to or in? unacquainted with unaffected by, in, for or with? "unaffordable for" or "unaffordable to"? unanimous in, on, about, regarding or for? "unattractive to" or "unattractive for"? "unavailable for" or "unavailable to"?

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