Not to be used vs Restricted

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

Not to be used

Beyond 10,000 (less common)

Restricted

Top 2,000 (common)
Most common: Restricted
 Not to be usedRestricted
Pronunciation🇬🇧 //nɒt tə bi juːzd//🇺🇸 //nɑt tə bi juzd//🇬🇧 //rɪˈstrɪktɪd//🇺🇸 //rɪˈstrɪktɪd//
MeaningThis phrase means something should not be used.Limited or controlled in some way.
ExampleThe equipment is marked with a label saying 'Not to be used'.Access to the laboratory is restricted to authorized personnel only.
RegisterNeutralNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
Collocationsclearly marked as not to be used, labelled as not to be used, identified as not to be usedrestricted access, restricted area, restricted information, restricted zone, restricted diet
Antonyms-unrestricted, open, free
Common mistakesConfused with similar phrases like 'not allowed' or 'off-limits'., Using it in very casual conversations where a simpler phrase would be better.Confusing 'restricted' with 'restrictive', which has a different meaning., Using 'restrict' instead of 'restricted' when a past participle is needed., Omitting the necessary noun after 'restricted' in a sentence.
Usage notesUse this phrase in contexts where something is banned or discouraged. It is clear and straightforward but shouldn’t be used in overly casual situations.Use 'restricted' in formal or neutral contexts. Avoid in casual conversations unless discussing specific limitations.

See it in real clips

Not to be used
Restricted

Frequently asked questions: Not to be used vs Restricted

What's the difference between Not to be used and Restricted?

Not to be used: This phrase means something should not be used. Restricted: Limited or controlled in some way.

Which is more common: Not to be used and Restricted?

Restricted is the most common in everyday English.

Can you show an example of each?

Not to be used: The equipment is marked with a label saying 'Not to be used'. Restricted: Access to the laboratory is restricted to authorized personnel only.

Can I use Not to be used and Restricted interchangeably?

Not always. Not to be used and Restricted are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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