Mazdeism

English Etymology Formed in English from en Mazdean -ism by swapping en -an with en -ism. Proper noun en hypercorrect dated en Mazdaeism, en 1 Mazdaism Usage notes The suffix -aeismus (or -æismus) is a hypercorrect form not attested in Classical Latin, as it would imply a Greek -αϊισμός (-aïismós), which does not exist. Greek formations use -αϊσμός (-aïsmós) instead, Latinized as -aismus: e.g. grc Ἰουδαϊσμός (la iudaismus), from grc Ἰουδαῖος (la iudaeus).