出典:Wiktionary
Back-formation from various words ending in “arian”, some directly derived from Classical or Medieval Latin words ending in -arius by adding -an to the stem, other indirectly via Old French words ending in "arien(ne)" or "erien(ne)" or from English words ending in “ary” to which -an was suffixed; note the same phenomenon in -ary. Equivalent to -ary + -an.
-arian
From Late Latin Arianus, from Arius + -ānus (“-an: forming adjectives”), from Ancient Greek Ἄρειος (Áreios), from ἄρειος (áreios, “Arean, warlike”), from Ἄρης (Árēs, “Ares”) + -ιος (-ios, “-y: forming adjectives”). Cf. Arean.
Arian (複数形 Arians)
Arian (comparative more Arian, superlative most Arian)
Arian (not comparable)