Adiaphoron (plural: adiaphora from the Greek ἀδιάφορα "indifferent things") is a concept of Stoic philosophy that indicates things outside of moral law—that is, actions that morality neither mandates nor forbids.In Christianity, adiaphora are matters not regarded as essential to faith, but nevertheless as permissible for Christians or allowed in church. What is specifically considered adiaphora depends on the specific theology in view.