Please accept my sincerest apologies.

Meaning

Offering a formal and heartfelt apology.

Examples

• John: 'I'm very sorry for any trouble I caused.'<br>
• Alice: '<b>Please accept my sincerest apologies</b>.'
• John: '<b>Please accept my sincerest apologies</b> for any inconvenience.'
• Alice: 'I caused a significant delay.'<br>