What it means
といい expresses a hope or wish that a situation will be true or become true. It is often used when the result is uncertain or not fully under the speaker’s control, and it can be translated as “I hope...” or “It would be good if...”. A plain clause comes before といい, while a noun or na-adjective generally takes だ before it. The polite version adds です after といい.
Usage note
Do not confuse といい with ばいい, which commonly gives advice or says what someone should do. といい focuses on the speaker’s hope rather than a recommended action.
How to use it
明日が休日だといいです。
I hope tomorrow is a holiday.
部屋が静かだといいです。
I hope the room is quiet.
試験が易しいといいです。
I hope the exam is easy.
雨がやむといいです。
I hope the rain stops.
明日が休日だといい。
I hope tomorrow is a holiday.
部屋が静かだといい。
I hope the room is quiet.
試験が易しいといい。
I hope the exam is easy.
雨がやむといい。
I hope the rain stops.
Example sentences
来月の健康診断で、異常がないといいです。
I hope there are no abnormalities at next month's health checkup.
明日の遠足で、雨が降らないといいです。
I hope it will not rain during tomorrow's field trip.
弟の新しい仕事が長く続くといいです。
I hope my younger brother's new job lasts a long time.
私は、