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Prepositions with nouns

Prepositions used with fitness

Fitness commonly combines with for, to, and in depending on whether you mean suitability, ability, or area of skill.

Quick answer

Which prepositions go with fitness?

Use fitness for to show suitability, fitness to with actions, and fitness in with a specific area or skill. Fitness with is less common and usually introduces a related feature. Fitness of appears mainly in formal evaluation contexts.

fitness for duty
fitness to compete
fitness in old age
fitness with wearable technology

Choose the pattern by meaning

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

1
fitness for + purpose

Suitability for a role or activity

Use for when judging whether something or someone is suitable.

fitness for military service
The doctor confirmed his fitness for work
2
fitness to + verb

Ability or readiness to act

Use to before an infinitive verb.

fitness to drive
The athlete proved her fitness to compete
3
fitness in + area

Skill or condition in a field

Use in for a particular area or stage of life.

fitness in later life
The course improves fitness in young adults
4
fitness with + feature

Connection with another element

With can link fitness to equipment, technology, or methods.

fitness with smart devices
The app combines fitness with nutrition tracking

See the difference in context

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

Construction
Example
Meaning
fitness for
The report assessed his fitness for duty.
suitability for a task or role
fitness to
Doctors evaluated her fitness to travel.
ability or readiness to do something
fitness in
Researchers studied fitness in older adults.
condition within a group or area
fitness with
The brand links fitness with lifestyle coaching.
association with another feature
fitness of
The inspector questioned the fitness of the equipment.
formal assessment of quality or suitability

Common mistakes

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

Using to before a noun

Use for before nouns and to before verbs.

✕ fitness to the job ✓ fitness for the job

Using with for suitability

With usually shows association, not suitability.

✕ Her fitness with duty was confirmed. ✓ Her fitness for duty was confirmed.

Using of in everyday contexts

Of sounds formal in many cases.

✕ We discussed the fitness of employees for the race. ✓ We discussed the employees' fitness for the race.

Quick practice

Choose the expression that matches the intended meaning.

1. The doctor evaluated his fitness ___ work.
2. They questioned her fitness ___ drive.
3. The study focused on fitness ___ teenagers.

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Frequently asked questions

Is fitness for the exam correct?

Yes, if you mean suitability or readiness for it.

Can I say fitness to work?

Yes. Fitness to plus a verb is a standard pattern.

Is fitness with common?

It is less common and usually shows association rather than suitability.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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