Prepositions after adjectives

foaming: which preposition to use

Foaming is commonly followed by at, with, or from in different meanings. In and of are usually part of a separate phrase, not selected by foaming itself.

Quick answer

Common uses of foaming

Use foaming at for an angry reaction or foam coming from the mouth. Use foaming with for strong emotion or abundance. Use foaming from when foam comes out of a source. In and of usually introduce separate details rather than forming a fixed combination with foaming.

The dog was foaming at the mouth
She came home foaming with rage
Soap was foaming from the machine

Choose the pattern by meaning

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

1
foaming at + target

Showing anger or foam directed outward

Foaming at is common in expressions about rage or foam at the mouth.

He was foaming at the mouth after the seizure
Fans were foaming at the referee after the final call
2
foaming with + emotion/substance

Showing a strong feeling or full amount

Foaming with often describes intense emotion or something full of foam.

She was foaming with anger
The river was foaming with white water
3
foaming from + source

Showing where the foam comes from

Foaming from identifies the source or origin of the foam.

Beer was foaming from the bottle
Water came foaming from the pipe
4
foaming in + place

Describing location rather than a fixed combination

In usually introduces a place where something is foaming. It is not a standard adjective-preposition pattern selected by foaming.

The milk was foaming in the pan
Waves were foaming in the harbour

See the difference in context

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

Construction
Example
Meaning
foaming at
The patient was foaming at the mouth.
A standard expression for foam coming from the mouth or intense anger.
foaming with
She was foaming with frustration.
Shows a strong emotion or large amount of foam.
foaming from
Liquid was foaming from the container.
Identifies the source of the foam.
foaming in
The water was foaming in the sink.
In introduces a location, not a fixed adjective pattern.
foaming of
They spoke of foaming waves.
Of usually belongs to another structure and is not a normal complement after foaming.

Common mistakes

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

Using of as a direct complement

Foaming is not normally followed directly by of.

✕ The horse was foaming of anger. ✓ The horse was foaming with anger.

Confusing at and with

At often suggests direction or target, while with suggests emotion or fullness.

✕ She was foaming at rage. ✓ She was foaming with rage.

Treating in as a fixed pattern

In usually gives location only.

✕ He is foaming in his mistake. ✓ He is foaming at the mistake.

Using from for emotion

From usually marks a source, not a feeling.

✕ She was foaming from anger. ✓ She was foaming with anger.

Quick practice

Choose the expression that matches the intended meaning.

1. The injured dog was ___ the mouth.
2. He came out of the meeting ___ frustration.
3. Soap was ___ the broken pipe.

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Frequently asked questions

Is foaming at the mouth idiomatic English?

Yes. It is a very common fixed expression.

Can I say foaming with anger?

Yes. Foaming with is natural for strong emotions such as anger or rage.

Is foaming of correct?

Usually no. English normally uses with, at, or another structure instead.

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