This is a good post that raises a really interesting question.Muncey wrote: Can there not be a subjective and objective dimension to morality? Objective being, as I've said I believe, the core understanding and difference between right and wrong.. the 'moral spectrum'. The subjective dimension being that of which you described; telling someone that wrongness is a property of a specific act... filling up the 'moral spectrum' with human actions ect and placing them in an unfixed, often subject to change, position.
Although I'd agree in our every day lives we would use the subjective dimension far more but I believe that subjective dimension is built on the foundations of the objective. The way we define the terms good and evil, right and wrong.. it doesn't matter what language we use, the underlying meaning is understood by everybody.. its objective. People only get confused by the language of good and evil, most people (unless they have a mental condition) understand the concepts of good and evil.
The subjective is taught to us and developed through social norms and whatever, but its developed on top of an objective dimension imo.
Yes to the subjective / objective dimensions but I'm not totally at ease with your definition of objective. Generally objective and subjective are defined as mind independent and mind dependent. Our subjective experience occurs to us, objective facts about the world exist independently of our ability to identify or recognise them. What I think you are closer to describing is the distinction between metaethics and normative ethics. If these properties are real, we can call ourselves realists we accept there are real / objective properties.
If the foundations of ethics are objective then this is a metaethical claim. That there is this property to which wrongness or goodness refers. On top of this you also have normative ethics which will try and answer what we should do in any given situation, normativity seems to play the role you are ascribing to subjective, this is the dimension by which we can evaluate acts and is based on the foundations provided by metaethical objective foundations.
It's possible to be a metaethical anti-realist which brings you closer to subjectivism,