Synonyms for Discretion (same or very similar meaning)
WordNet sense 1 (refined taste; tact):
delicacyWordNet sense 2 (knowing how to avoid embarrassment or distress):
circumspection, discreetness, prudenceWordNet sense 3 (the power of making free choices unconstrained by external agencies):
free willWordNet sense 4 (the trait of judging wisely and objectively):
discernmentFrom the ODE community, based on WordNetadd/edit