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Prepositions after adjectives

Noticeable in, to, on, at or by?

Noticeable to is the most common pattern for the person who notices something. Other prepositions usually introduce place, surface, reaction, or cause.

Quick answer

Which prepositions are used with noticeable?

Use noticeable to for the person who can notice something. Use noticeable in for a place, group, or area where something can be seen. Noticeable on often refers to a surface or body part. Noticeable at can refer to a time or level. Noticeable by usually means identifiable by a feature rather than following the adjective directly.

The difference was immediately noticeable to customers.
A change is noticeable in the data.
There was a scratch noticeable on the screen.

Choose the pattern by meaning

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

1
noticeable to + person/group

Showing who notices something

Use noticeable to with the people who can observe or detect the change or feature.

The improvement was noticeable to everyone.
His accent is noticeable to local listeners.
2
noticeable in + place/data/group

Showing where something can be observed

Use noticeable in for areas, sets of information, or groups where a feature appears.

The pattern is noticeable in younger voters.
A decline was noticeable in sales figures.
3
noticeable on + surface/body

Describing marks or features on surfaces

Use noticeable on with physical surfaces, clothing, or body parts.

There was damage noticeable on the door.
The bruise became noticeable on her arm.
4
noticeable at + time/level

Referring to a point in time or degree

Use noticeable at with specific times, ages, speeds, or levels.

The effect is most noticeable at night.
The difference becomes noticeable at higher temperatures.

See the difference in context

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

Construction
Example
Meaning
noticeable to
The error was noticeable to experienced users.
detected by a person or group
noticeable in
Growth was noticeable in the final quarter.
visible within an area, group, or set of data
noticeable on
The stain was noticeable on the carpet.
visible on a surface or body part
noticeable at
The sound is more noticeable at low speeds.
clear at a specific time, level, or condition
noticeable by
The species is noticeable by its bright wings.
possible but less natural than identifiable by or recognizable by

Common mistakes

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

Using noticeable by for observers

Use noticeable to for the people who notice something.

✕ The change was noticeable by customers. ✓ The change was noticeable to customers.

Confusing in and on

Use in for areas or data and on for surfaces.

✕ The crack was noticeable in the wall. ✓ The crack was noticeable on the wall.

Using at for people

At usually refers to time, level, or condition, not observers.

✕ The difference was noticeable at visitors. ✓ The difference was noticeable to visitors.

Quick practice

Choose the expression that matches the intended meaning.

1. The improvement was clearly ___ patients.
2. The effect is most ___ high altitudes.
3. There was damage ___ the front panel.

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Frequently asked questions

Which preposition is most common after noticeable?

Noticeable to is very common when naming the observer.

Can noticeable by be correct?

It is possible in some contexts, but identifiable by or recognizable by is often more natural.

What is the difference between noticeable in and noticeable on?

In refers to areas, groups, or data, while on refers to surfaces or body parts.

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