Defining "Good" and "Bad" in Terms of "Better"

Monadic predicates for "good" and "bad" are inserted into structures already containing the dyadic predicate "better". A set of logical properties for "good" and "bad" is proposed, and a complete characterization is given of the pairs of monadic predicates that have these properties. It is argued that "good" and "bad" can indeed be defined in terms of "better", and a definition is given that is more generally applicable than those previously proposed.