Adiaphora

Adiaphoron (/ædɪˈæfərɒn, ædiˈæfərɒn/; plural: adiaphora; from the Greek ἀδιάφορον (pl. ἀδιάφορα), meaning 'not different or differentiable') is the negation of διαφορά diaphora, 'difference'.