WordNet records no synonym and no antonym for moral hazard. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
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.
(economics) the lack of any incentive to guard against a risk when you are protected against it (as by insurance)
“insurance companies are exposed to a moral hazard if the insured party is not honest”
Synonyms, antonyms and the broader and narrower relations for moral hazard come from Princeton University’s WordNet. Full sources and licences.