Sign In Get Started
Prepositions after adjectives

Fatal to or fatal for?

Fatal to is the standard and most common pattern. Fatal for appears in some contexts but usually has a different structure or meaning.

Quick answer

Use fatal to for harmful effects

Use fatal to when something causes death, failure, or serious harm to a person, animal, plan, or relationship. Fatal for is less common and usually introduces a consequence for someone rather than the direct object of harm.

The poison was fatal to small animals.
His mistake proved fatal to the project.
The decision could be fatal for the company.

Choose the pattern by meaning

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

1
fatal to + person/animal

Causing death

Use fatal to when something causes death or severe harm to living beings.

The disease is often fatal to infants.
The chemical can be fatal to fish.
2
fatal to + plan/relationship

Causing failure or destruction

Fatal to can also describe damage to non-living things such as plans or careers.

The scandal was fatal to his campaign.
Poor communication is fatal to teamwork.
3
fatal for + person/group

Describing consequences for someone

Fatal for is less direct and usually refers to the consequences for a person or organisation.

The price increase could be fatal for small businesses.
The delay may prove fatal for the startup.

See the difference in context

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

Construction
Example
Meaning
fatal to
The injury was fatal to the driver.
standard pattern meaning causing death or destruction
fatal for
The error could be fatal for the company.
focuses on consequences affecting someone or something
fatal in
There was a fatal error in the report.
in introduces the location of the error, not a fixed adjective pattern

Common mistakes

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

Using fatal for instead of fatal to in direct harm

Use fatal to after substances, injuries, or events that directly cause death or failure.

✕ The poison was fatal for the patient. ✓ The poison was fatal to the patient.

Confusing fatal with serious

Fatal often means causing death or complete failure.

✕ He made a fatal spelling mistake. ✓ He made a serious spelling mistake.

Using fatal to with a location

To should introduce the affected person or thing, not the place.

✕ The accident was fatal to the highway. ✓ The accident was fatal for traffic on the highway.

Quick practice

Choose the expression that matches the intended meaning.

1. The infection can be fatal ___ elderly patients.
2. The scandal proved fatal ___ his career.
3. The policy change may be fatal ___ small firms.

Check your sentence in context

Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.

Free to try · No signup required

Frequently asked questions

Which is more common: fatal to or fatal for?

Fatal to is the standard and more widely used pattern.

Can fatal describe non-physical damage?

Yes. A mistake can be fatal to a project or career.

Is fatal for incorrect?

No. It is possible when talking about consequences for someone or something, but it is less direct than fatal to.

face-to-face-with-in-at-for, to "fair to" or "fair in"? faithful to, in, of, with or for? falling of, in, out, into or off? "false in" or "false to"? famed for, as, in or throughout? familiar with, to, from or in? famous for, in, of, by or as? fanatical about, in, as, for or of? "fantastic for" or "fantastic in"? far from, in, to, for or with? fascinating to, about, in, for or as?

Write with confidence in Linguix

Create a free account to check complete texts, apply suggestions, and save your documents.

Create a free account