とわ 永久 LinksSentence search for 永久Sentence search for とわSentence search for 永遠Sentence search for 常Kanji details for 永 and 久Edit in JMdict Noun, Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'1. eternity; perpetuity; permanencePoetical termOther forms永遠 【とわ】、常 【とわ】Notes常: Rarely-used kanji form. Discussions Log in to talk about this word.