moral certainty is a noun meaning "certainty based on an inner conviction". It carries one recorded sense.
certainty based on an inner conviction
“she believed in the importance of moral absolutes and moral certainty”
“the prosecutor had a moral certainty that the prisoner was guilty”
Definitions, synonyms and semantic relations for moral certainty come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.