modality N4 common casualpolitewritten
〜といい — it'd be nice if ~ / I hope ~
〜といい ・ といい
Meaning
- it'd be nice if ~ / I hope ~ — voices a hope about something outside one's control, using the と conditional + いい
〜といい is literally 'if ~ happens, (it'd be) good' — a wish about a future situation you can't directly decide, especially the weather, someone's luck, or how something turns out. For a hope you feel strongly about not coming true, 〜といいんだけど / 〜といいなあ softens it into wistfulness. With a negative (〜ないといい) it's hoping something won't happen.
Key sentence
明日晴れるといいですね。
I hope it's sunny tomorrow.
Formation
| Attaches to | Form | Example |
|---|---|---|
| Plain non-past verb / adjective + といい (と = conditional) | Vる/Aい + といい (+ ね / な / んだけど) | 受かるといい / 元気だといい / 来ないといい |
Examples
試験に合格するといいね。
I hope you pass the exam.
早く元気になるといいんだけど。
I do hope they get better soon…
雨が降らないといいなあ。
I hope it doesn't rain.
Easily confused with
〜ばいい ばいい advises an action you control ('you should just ~'); といい voices a hope about an outcome you don't control ('I hope ~'). 行けばいい = 'just go'; 行けるといい = 'I hope I can go'. 〜たらどう たらどう suggests the listener take an action; といい expresses the speaker's own hope about how things turn out — a wish, not advice.
Notes
- A hope for the listener's benefit ('I hope it goes well for you') usually takes 〜といいですね; a hope you're invested in personally leans on 〜といいんだけど / 〜といいなあ.
See 〜といい in real sentences
Jengo shows 〜といい the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.
Study it in JengoSources Compiled from published Japanese grammar references.