[Stormieweather]

I would say that morality is a code of conduct.

The "group" decides the conditions of this code of conduct.

Various groups have different, although often overlapping morals.

Groups can be religious, political, cultural, or a larger society.

For example, if I believe that eating meat is "bad", and I find other people that agree with me, then to us, in our group, eating meat is immoral.

Personally, to me, something is immoral if it harms innocent or vulnerable individuals. Rape, child abuse, elder abuse, theft, dishonesty, and assault are examples of conduct that I find immoral. There may be people who believe such acts are perfectly fine, but I won't be a part of any group who believes so. Which is, of course, my choice.