ばんだいふえき 万代不易 LinksSentence search for 万代不易Sentence search for ばんだいふえきKanji details for 万, 代, 不 and 易Edit in JMdict Na-adjective (keiyodoshi), Noun1. eternity; perpetuityYojijukugo (four character compound) Discussions Log in to talk about this word.