morality has 3 distinct synonyms spread across 1 of its 2 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is immorality.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
concern with the distinction between good and evil or right and wrong; right or good conduct
motivation based on ideas of right and wrong
Synonyms, antonyms and the broader and narrower relations for morality come from Princeton University’s WordNet. Full sources and licences.