Regretter

Regretter (Fr.)/ Regret (Eng.) verb:
To feel sorry, disappointed or distressed about. Te remember with a feeling of loss or sorrow.

"Daddy, what does regret mean? Well son, the funny thing about regret is, it's better to regret something you have done, than to regret something you haven't done...."
- excerpt from "Sweet Loaf" by Butthole Surfers

I wonder what is more bothersome, saying something and wishing you hadn’t, or saying nothing and wishing you had?

Given the punk wisdom of my youth I am going to go with the later. As a mature adult, I think the only caveat I would add to this wisdom is to consider the following: will the act intentionally hurt someone?