sincerely
Definitions
In a genuine, honest, or heartfelt manner.
Without pretense or deceit; truly.
Examples
I sincerely apologize for the misunderstanding that occurred during our meeting.
She signed the letter sincerely, hoping that her message would be well received.
Synonyms
genuinely honestly truly heartfeltly frankly earnestly candidly
Antonyms
insincerely falsely dishonestly hypocritically deceitfully feignedly artificially