Proper vs Suitable

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

 ProperSuitable
Meaningcorrect or suitable; according to rulesRight or good for a particular purpose.
CEFR levelB1B1
Part of speechadjectiveadjective
Usage notesUse 'proper' when talking about something that meets expected standards or is appropriate. Avoid in overly casual contexts, where more relaxed terms may fit better.Use 'suitable' in contexts where you need to describe something that is appropriate or fitting. It is common in both spoken and written English, but should be avoided in very casual conversations.

Frequently asked questions: Proper vs Suitable

What's the difference between "Proper" and "Suitable"?

"Proper" means: correct or suitable; according to rules "Suitable" means: Right or good for a particular purpose.

When should I use "Proper" and "Suitable"?

They can all be used in everyday English.

Are "Proper" and "Suitable" the same CEFR level?

"Proper" is at B1, "Suitable" is at B1 on the CEFR scale.

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