えいきゅうふへん 永久不変 LinksSentence search for 永久不変Sentence search for えいきゅうふへんKanji details for 永, 久, 不 and 変Edit in JMdict Noun, Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'1. permanence; forever unchangingYojijukugo (four character compound) Discussions Log in to talk about this word.