Constant vs Fixed

When to use each in English, with meaning, register, and examples.

 ConstantFixed
MeaningSomething that stays the same and doesn't change.Something that is not changed or is repaired.
CEFR levelB2B1
Part of speechadjectiveadjective
Usage notesUse 'constant' when discussing something that remains unchanged over time. It can be used in both formal and informal contexts, but is often used in academic or scientific discussions.Use 'fixed' when something has been repaired or when it's stable and unchanging. Avoid in casual conversations unless referring to repairs or adjustments.

Frequently asked questions: Constant vs Fixed

What's the difference between "Constant" and "Fixed"?

"Constant" means: Something that stays the same and doesn't change. "Fixed" means: Something that is not changed or is repaired.

When should I use "Constant" and "Fixed"?

They can all be used in everyday English.

Are "Constant" and "Fixed" the same CEFR level?

"Constant" is at B2, "Fixed" is at B1 on the CEFR scale.

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