Translation guide
Describes something not officially recorded, listed, or enrolled. Common contexts include vehicles, trademarks, accounts, and official documents.
unregistered
Most common equivalent for objects, accounts, trademarks, etc.
This trademark is still unregistered.
Unregistered vehicles cannot be used.
Descriptive phrase meaning 'has not been registered'. More conversational than 未登録.
This account hasn't been registered yet.
Refers to a person not being registered for a service, class, or membership.
In Japan, refers to a birth or marriage not entered in the family register (koseki). This is a specific legal meaning.
Legal term meaning 'without family registration'. Used for unregistered births or stateless persons.
Unregistered children are becoming an issue.
For people not signed up, use 登録していない instead of 未登録, which sounds stiff and impersonal.
Unregistered users cannot use this feature.