Please accept my unreserved apologies.

Translation language

Meaning

A formal and complete apology, leaving no room for doubt.

John: 'This is completely unacceptable; I expect a full explanation.'<br>

Alice: 'Please accept my unreserved apologies, John. A full investigation is underway.'

John: 'Please accept my unreserved apologies, Alice. We will fully compensate you for the losses incurred.'

Alice: 'The error on your part has caused considerable damage.'<br>