～のに

How it works

～のに links two clauses where the second one goes against what the first led you to expect. It is the Japanese “even though / and yet”, with a built-in feeling of surprise, complaint or regret: you expected one thing, and reality let you down.

• Verbs and い-adjectives attach in plain form: 飲んだのに、安いのに。
• Nouns and な-adjectives need な: 日曜日なのに、便利なのに (the same な as in ので and んです).
• Tense sits on the first clause as usual: 勉強したのに (past), 勉強しているのに (ongoing).

Because のに reports an actual, established contrast, the second clause is a fact: you cannot follow it with a request, an invitation or a “let us”. Sentence-final のに… (せっかく来たのに…) leaves the disappointment hanging, a very common spoken pattern.

Do not confuse it with the purpose のに after a dictionary-form verb: 漢字を調べるのに便利だ = “useful for looking up kanji”.

Examples

• 薬を飲んだのに、熱が下がらない。（くすり を のんだ のに、ねつ が さがらない）— I took the medicine, and yet my fever will not go down.
• 一生懸命勉強したのに、試験に落ちてしまった。（いっしょうけんめい べんきょう した のに、しけん に おちて しまった）— Even though I studied hard, I failed the exam.
• 日曜日なのに、会社に行かなければならない。（にちようび な のに、かいしゃ に いかなければ ならない）— Even though it is Sunday, I have to go to the office.
• この店は安いのに、あまり客がいない。（この みせ は やすい のに、あまり きゃく が いない）— This shop is cheap, and yet it hardly has any customers.
• このアプリは便利なのに、誰も使わない。（この アプリ は べんり な のに、だれ も つかわない）— This app is convenient, yet nobody uses it.
• せっかく作ったのに、誰も食べなかった。（せっかく つくった のに、だれ も たべなかった）— I went to all the trouble of making it, and nobody ate it.

Compare with

• ～ても: “even if / even though” without the emotional charge, and the only option for hypothetical conditions: 明日雨が降っても行く (even if it rains tomorrow). のに is for what has already turned out contrary to expectation.
• ～けれども ／ ～が: neutral “although / but”; switch to these when you are just stating a contrast and do not want to sound disappointed, or when the second clause is a request (疲れているだろうけど、頑張って).
• ～ために ／ purpose のに: ために states a goal; the purpose のに (dictionary-form verb + のに + 便利／必要／時間がかかる) measures what something is useful for or what it costs.

Traps for Spanish, English and French speakers

• Spanish aunque switches to the subjunctive for hypotheticals (aunque llueva) and French même si does the same job, but Japanese needs a different word: ✗ 明日雨が降るのに、行きます → ○ 明日雨が降っても、行きます。 のに is for a contrast that has already happened (雨が降ったのに、行った).
• As with ので and んです, nouns and な-adjectives need な, which Spanish and French speakers skip because their adjectives and nouns behave alike: ✗ 日曜日のに ✗ 静かのに → ○ 日曜日なのに ○ 静かなのに。
• English speakers put a request after “even though”, which のに forbids: ✗ 疲れているのに、頑張ってください → ○ 疲れていても、頑張ってください or 疲れているだろうけど、頑張ってください。 The clause after のに must be a fact, not a wish, order or invitation.
• Not every のに is “although”: この辞書は漢字を調べるのに便利だ means “this dictionary is handy for looking up kanji”. After a dictionary-form verb followed by 便利・必要・時間がかかる, のに marks purpose, so read the whole sentence before translating it as a complaint.