ゆうきゅう 悠久 Wanikani level 54 LinksSentence search for 悠久Sentence search for ゆうきゅうKanji details for 悠 and 久Edit in JMdict Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Noun1. eternal; everlasting; perpetual; immemorial Discussions Log in to talk about this word.