ずいいち 随一 Common word LinksSentence search for 随一Sentence search for ずいいちSentence search for ずいいつKanji details for 随 and 一Edit in JMdict Noun1. best; greatest; firstOther forms随一 【ずいいつ】Notesずいいつ: Irregular kana usage. Discussions Log in to talk about this word.