Preposition after verb

Amaze at or amaze by?

English usually uses amazed at for reactions and amazed by for causes or agents. The active verb amaze normally takes a direct object without a preposition.

Quick answer

Which preposition goes with amaze?

The verb amaze usually takes a direct object: The results amazed us. In passive or adjective-like use, amazed at is common for reactions to facts or events, while amazed by is common for the thing or person causing the feeling.

We were amazed at the speed of the recovery.
She was amazed by his generosity.
The announcement amazed everyone.

Choose the pattern by meaning

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

1
amaze + object

Showing that something surprises someone

Use amaze directly with the person or group that feels surprise.

The news amazed the team.
Her performance amazed me.
2
amazed at + thing

Reacting to a fact, event, or situation

Amazed at often introduces the situation that causes surprise.

They were amazed at the results.
I was amazed at how quickly it changed.
3
amazed by + person or quality

Naming the cause of the feeling

Amazed by commonly focuses on the person, action, or quality creating amazement.

We were amazed by her skill.
He was amazed by the level of detail.
4
be amazing to + person

Describing the effect on someone

Amazing to describes how something appears from another person's perspective.

The technology was amazing to visitors.
It seemed amazing to me that nobody complained.

See the difference in context

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

Construction
Example
Meaning
amazed at
She was amazed at the sudden change.
Natural for reactions to events, facts, or situations.
amazed by
We were amazed by his patience.
Natural for the person, action, or quality causing amazement.
amaze + object
The speech amazed the audience.
Standard active verb pattern with no preposition.
amaze at
The result amazed at the judges.
Nonstandard when amaze is active; use amazed at or amaze someone instead.

Common mistakes

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

Using amaze at in active voice

The active verb amaze normally takes a direct object.

✕ The performance amazed at us. ✓ The performance amazed us.

Confusing amazed at and amazed by

Both are possible, but they highlight different things.

✕ She was amazed by how fast the train arrived. ✓ She was amazed at how fast the train arrived.

Adding an unnecessary preposition

Do not add a preposition after amaze before the affected person.

✕ The discovery amazed to scientists. ✓ The discovery amazed scientists.

Quick practice

Choose the expression that matches the intended meaning.

1. We were ___ the quality of the service.
2. The magician ___ the audience.
3. She was amazed ___ his calm response.

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Frequently asked questions

Can I say amazed with no preposition?

Yes. In active sentences, amaze normally takes a direct object: The news amazed us.

Is amazed at more common than amazed by?

Both are standard. Amazed at often focuses on a situation or fact, while amazed by often focuses on a person, action, or quality.

Can amaze be followed by a clause?

Yes. You can say things like I was amazed at how quickly they finished.

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