Judy, Judy, Judy, (in my best Rock Hudson impression)
I am truly happy that you are having a much better day. I think that yes, that is a huge step and relief that your H apologised for such a terrible word. I would consider this an opportunity to take the higher road and set some boundaries. Perhaps something along the lines of " I truly appreciate your apology, your words hurt me more than you can imagine. In the future, for the sake of our family, you cannot use that tone and certainly not that language with me again. I will treat you with respect and I expect the same from you."
Just my 2 cents
M: 48 W: 45 Married: 16 years D1-14, D2-11, D3-9 BD: May 29 She moved out 2 weeks later with kids Awaiting mediation