expression
thank you very much; we sincerely thank you
A polite, formal expression of gratitude. 誠に adds a sincere or official tone, so it is common in business, announcements, speeches, and service settings rather than casual thanks among close friends.
本日はお越しいただき、誠にありがとうございます。
Thank you very much for coming today.
ご協力いただき、誠にありがとうございます。
Thank you very much for your cooperation.
The basic polite 'thank you'; less formal and less emphatic than 誠にありがとうございます.
Also means 'thank you very much,' but sounds more conversational than 誠にありがとうございます.
A more formal and ceremonious expression of gratitude, often used in speeches, letters, and official messages.
A fixed polite phrase combining 誠に, 'truly; sincerely,' with ありがとうございます, 'thank you.' The spelling 有難う reflects the connection with ありがたい, but the modern phrase is normally written with ありがとう in kana.