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Preposition before noun

Using “shape” with prepositions

“In shape” is a fixed expression about physical condition. “Of shape” is not normally used in this meaning.

Quick answer

Correct expression

Use “in shape” to describe good physical condition. Use “out of shape” for poor condition. “Of shape” is not a normal English expression.

She stays in shape by swimming.
After the winter, he was out of shape.

Choose the pattern by meaning

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

1
in shape

Describing fitness

This fixed phrase means physically fit.

Running helps me stay in shape.
2
out of shape

Describing poor fitness

Use this phrase for lack of fitness.

I feel out of shape after the holiday.

See the difference in context

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

Construction
Example
Meaning
in shape
The athlete is in shape.
physically fit
of shape
“Of shape” is not idiomatic in this meaning.
nonstandard expression
out of shape
He is out of shape after months indoors.
not fit

Common mistakes

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

Using “of shape” for fitness

English does not use “of shape” to describe condition.

✕ She is of shape. ✓ She is in shape.

Forgetting the fixed phrase

Use the full expression “in shape.”

✕ He keeps shape. ✓ He keeps in shape.

Quick practice

Choose the expression that matches the intended meaning.

1. Cycling keeps her ___ shape.
2. After surgery, he felt ___ of shape.
3. Which phrase is idiomatic for physical fitness?

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Frequently asked questions

Is “in shape” always about fitness?

Usually yes, although it can also describe objects in good condition.

Is “of shape” ever correct?

Not as a fixed phrase about fitness.

What is the opposite of “in shape”?

The common opposite is “out of shape.”

"in act" or "of act"? "in agreement" or "of agreement"? "in appearance" or "of appearance"? "in area" or "of area"? in, at, on, of or to hand? "in attempt" or "of attempt"? "in battle" or "of battle"? "in celebration", "of celebration" or "for celebration"? "in chain" or "of chain"? "in chapter" or "of chapter"? "in charge" or "of charge"? "in check" or "of check"?

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