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Prepositions after adjectives

smooth with, for, in, on or to?

Smooth is used with different prepositions depending on meaning. Smooth with is common for behaviour, while smooth in refers to skill or movement in a context.

Quick answer

Which prepositions go with smooth?

Smooth with usually describes someone's manner toward others. Smooth in refers to skill or ease in an activity or process. Smooth on and smooth to are uncommon directly after smooth as adjective patterns. Smooth for often introduces a purpose or comparison rather than a fixed adjective pattern.

She was always smooth with difficult clients.
The transition was smooth for a first attempt.
He is very smooth in interviews.
Traffic was smooth on the motorway today.

Choose the pattern by meaning

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

1
smooth with + person

Behaviour toward someone

Use smooth with to describe tactful or polished behaviour toward another person or group.

The manager was smooth with unhappy customers.
She is smooth with nervous guests.
2
smooth in + activity

Skill or ease in a situation

Use smooth in for fluent performance or movement within an activity or process.

He became smooth in negotiations.
The dancers looked smooth in every movement.
3
smooth for + purpose

Suitable or easy for something

Smooth for is not a fixed adjective pattern, but it can introduce a purpose or comparison.

The software is smooth for everyday use.
The road was surprisingly smooth for a mountain route.
4
smooth on + surface

Describing a surface or route

Smooth on usually introduces a separate place or surface phrase rather than a fixed combination.

The fabric feels smooth on the inside.
The ride stayed smooth on most roads.

See the difference in context

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

Construction
Example
Meaning
smooth with
She is smooth with clients.
polite, tactful, or polished toward people
smooth in
He is smooth in presentations.
fluent or confident within an activity
smooth for
The app is smooth for beginners.
easy or suitable for a purpose, not a fixed adjective pattern
smooth on
The bike rides smoothly on gravel.
on introduces the surface or place, not a standard adjective pattern with smooth
smooth to
The texture feels smooth to the touch.
to often belongs to another phrase such as to the touch, not directly to smooth

Common mistakes

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

Using smooth to before a person

Smooth to is not normally used for behaviour toward people.

✕ She is smooth to customers. ✓ She is smooth with customers.

Confusing smooth in and smooth with

Use smooth with for interaction with people and smooth in for performance in an activity.

✕ He is smooth with public speaking. ✓ He is smooth in public speaking.

Treating smooth on as a fixed adjective pattern

On usually introduces a surface or location.

✕ The driver is smooth on. ✓ The driver is smooth in heavy traffic.

Using smooth for without a clear comparison

Smooth for usually needs a purpose or standard of comparison.

✕ The interface is smooth for. ✓ The interface is smooth for new users.

Quick practice

Choose the expression that matches the intended meaning.

1. She is very smooth ___ difficult customers.
2. He became smoother ___ negotiations after more practice.
3. The road was smooth ___ a rural route.

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Frequently asked questions

Is smooth with common in business English?

Yes. Smooth with often describes tactful or polished communication with clients, customers, or colleagues.

Can I say smooth in conversation?

Yes. Smooth in conversation means fluent or confident while speaking.

Is smooth to correct?

Usually only in longer phrases such as smooth to the touch. It is not a common fixed pattern directly after smooth.

sacred-to-in-by-of, for "sad for" or "sad about"? "safe for", "safe from" or "safe in"? sanguine about, in, of, on or for? "satisfactory to" or "satisfactory for"? satisfied with, of, by, in or on? "satisfying for" or "satisfying to"? scarce in, for, at, on or of? scared of, to, about, for or by? "scary for" or "scary to"? "scathing about", "scathing in" or "scathing of"? "sceptical about" or "sceptical of"?

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