第二(だいに)に だいにに adverb secondly, in the second place formal 1. secondly, in the second place Used to introduce the second point in an ordered list of arguments, reasons, or items. Common in speeches, essays, and formal explanations. 第二(だいに)に、コストの問題(もんだい)がある。🔊 Secondly, there is the issue of cost. 第一(だいいち)に安全性(あんぜんせい)、第二(だいに)に効率性(こうりつせい)を重視(じゅうし)する。🔊 We prioritize safety first and efficiency second. 反対(はんたい)する理由(りゆう)は三(みっ)つある。第一(だいいち)に…、第二(だいに)に…、第三(だいさん)に…。🔊 There are three reasons for opposing it. First... second... third... A formal enumeration marker used in structured arguments. Part of the series 第一(だいいち)に (firstly), 第二(だいに)に (secondly), 第三(だいさん)に (thirdly), and so on.Common patterns第一(だいいち)に…、第二(だいに)に…: firstly..., secondly...第二(だいに)の理由(りゆう)は…: the second reason is...第二(だいに)に挙(あ)げられるのは…: what can be cited second is...Similar words次(つぎ)に: next — less formal; can be sequential rather than hierarchicalそして: and then — conversational connectorまた: also, furthermore — adds without implying a numbered order二(ふた)つ目(め)に: as the second item — slightly less formal alternative Related Words Compare: 次(つぎ)に (next) Compare: また (also, furthermore) Compare: 二(ふた)つ目(め) (as the second item) general Added 2026.3.27 14:37 · Revised 2026.9.2 13:01 19500/19916_dainini