Phrase

1. Said to express greater gratitude than would be conveyed by thank you.
2. Obviously (principally UK; implying offence that anyone could have doubted the statement)
   • 1997, J. K. Rowling, Harry Potter and the Philosopher's Stone - Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much.

Synonyms

• thanks a bunch
• thanks a lot
• thanks a million
• thanks very much
• thank you so much
• thank you so very much