Prepositions before nouns

Using prepositions with 'blood'

Different prepositions with blood create very different meanings, from family relationships to physical condition and inherited qualities.

Quick answer

Main differences

Use of blood in family expressions, with blood for visible presence, and in the blood for inherited or deeply rooted qualities.

They are related by blood.
His shirt was stained with blood.
Music is in her blood.
loss of blood can be dangerous.

Choose the pattern by meaning

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

1
with blood

Showing covering or presence

Use with when something has blood on or in it visibly.

The floor was covered with blood.
2
in the blood

Talking about inherited traits

This idiom refers to natural or family tendencies.

Teaching is in the blood in that family.
3
of blood

Expressing relation or substance

Of appears in phrases such as blood type or loss of blood.

loss of blood
4
by blood

Describing family connection

Use by blood for biological relation.

They are cousins by blood.

See the difference in context

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

Construction
Example
Meaning
of blood
The patient suffered loss of blood.
blood as a substance or quantity
with blood
His hands were covered with blood.
having blood on something
in blood
Revenge is in his blood.
part of someone's nature
by blood
related by blood
biologically related

Common mistakes

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

Using in blood for physical covering

Use with blood or covered in blood for visible blood.

✕ His shirt was in blood. ✓ His shirt was covered with blood.

Confusing by blood and in the blood

The phrases have different meanings.

✕ They are brothers in the blood. ✓ They are brothers by blood.

Quick practice

Choose the expression that matches the intended meaning.

1. They are related ___ blood.
2. Her clothes were covered ___ blood.
3. Cooking is ___ his blood.

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Frequently asked questions

Can I say 'covered in blood'?

Yes. Covered in blood and covered with blood are both common.

What does 'in the blood' mean?

It means natural, inherited, or deeply rooted.

Is 'of blood' used alone?

Usually no. It appears in longer phrases such as 'loss of blood'.

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