Prepositions after verbs

Mix with, in, into, on or by?

Mix combines with several prepositions. The choice depends on whether you mean combination, addition, movement, or method.

Quick answer

Which preposition should follow mix?

Use mix with for combining things or social interaction. Use mix in for adding something to a mixture and mix into for movement into a mixture or group. On and by are not common fixed partners of mix.

Mix the flour with water.
Please mix in the spices.
The colours mixed into a dark green shade.

Choose the pattern by meaning

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

1
mix with + substance/person

Combining things or socialising

Use with for things that combine together or people who interact socially.

Oil does not mix with water.
She likes to mix with creative people.
2
mix in + ingredient

Adding something to a mixture

Use in when adding an ingredient or element.

Slowly mix in the sugar.
He mixed in some humour.
3
mix into + mixture/group

Moving or blending into something

Use into for movement or gradual blending.

Stir the sauce and mix into the pasta.
The new student quickly mixed into the group.
4
mix by + method

Describing a method or means

By is possible when explaining how something is mixed, but it is not a fixed verb-preposition pattern.

The paint was mixed by hand.
The ingredients are mixed by machine.

See the difference in context

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

Construction
Example
Meaning
mix with
Tea mixes well with lemon.
Standard for combining substances or people.
mix in
Mix in the chopped herbs.
Add something to an existing mixture.
mix into
The powder mixed into the liquid easily.
Move or blend into something.
mix on
This is not a standard combination after mix.
On may appear separately in phrases of place, not as a fixed pattern.
mix by
The dough was mixed by hand.
By introduces the method used.

Common mistakes

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

Using on after mix

On is generally not used directly after mix.

✕ Mix on the sauce the pasta. ✓ Mix the sauce into the pasta.

Confusing in and into

In often focuses on adding, while into suggests movement or blending.

✕ Mix into the sugar first. ✓ Mix in the sugar first.

Leaving out with in combination meaning

Use with when two things combine together.

✕ Oil does not mix water. ✓ Oil does not mix with water.

Quick practice

Choose the expression that matches the intended meaning.

1. Please mix ___ the eggs slowly.
2. Red can mix well ___ orange.
3. The powder mixed ___ the soup quickly.

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Frequently asked questions

What is the difference between mix in and mix into?

Mix in usually means add something, while mix into often describes blending or movement into a larger mixture.

Can mix with refer to people?

Yes. It can mean social interaction, as in mix with colleagues.

Is mix on correct English?

Not as a standard verb-preposition pattern. English usually uses mix with, mix in, or mix into.

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