Prepositions after adjectives

“Tough for” vs. “tough on”

Use “tough for” when something is difficult for someone. Use “tough on” when someone or something treats others severely or has a harmful effect.

Quick answer

Main difference

“Tough for” means difficult or challenging for someone. “Tough on” means strict toward someone or harmful to something.

The exam was tough for new students.
The coach is tough on lazy players.
Long flights are tough on the body.

Choose the pattern by meaning

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

1
tough for + person

Something is difficult for someone

Use this pattern for challenges, situations, or experiences.

Winter is tough for elderly people.
2
tough on + person

Being strict toward someone

Use this pattern when someone applies strict rules or criticism.

The judge was tough on repeat offenders.
3
tough on + thing/body

Having a harmful effect

Use this pattern for negative physical or practical effects.

Salt water is tough on metal.
4
too tough for + noun/pronoun

Beyond someone's ability

This structure describes something excessively difficult.

The puzzle was too tough for me.

See the difference in context

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

Construction
Example
Meaning
tough for
The transition was tough for the team.
difficult or challenging for someone
tough on
The manager is tough on mistakes.
strict or severe toward someone or something
tough on
Running is tough on the knees.
causes strain or damage
tough with
She is tough with her children.
possible but less common than “tough on” for strictness

Common mistakes

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

Using “tough on” for difficulty

Use “for” when describing who experiences difficulty.

✕ The test was tough on me. ✓ The test was tough for me.

Using “tough for” for strict behaviour

Use “on” when someone treats others severely.

✕ The teacher is tough for late students. ✓ The teacher is tough on late students.

Forgetting the object after “on”

“Tough on” usually needs the affected person or thing.

✕ This climate is tough. ✓ This climate is tough on crops.

Quick practice

Choose the expression that matches the intended meaning.

1. The new schedule is tough ___ employees.
2. The coach is tough ___ discipline.
3. These chemicals are tough ___ the skin.

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Frequently asked questions

What does “tough on crime” mean?

It means strict in dealing with crime and criminals.

Can “tough on” describe physical effects?

Yes. It often describes strain or damage, such as “tough on the knees”.

Is “tough for” about people or situations?

Usually both. It describes situations that are difficult for someone.

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