甲斐がある・ 甲斐がないworth the effort; all for nothing
甲斐 is what you get back for an effort. With ある, it paid off: worth the work, the wait or the trip. With ない, it was all for nothing. People say it every day.
It was worth coming all this way. The view from the summit was breathtaking.
My three months of practice paid off: I set a personal best on the day.
How to form it
た-form + 甲斐がある・ない / Noun + の + 甲斐がある・ない
待った甲斐, 努力の甲斐. Often written かい. It looks back on what was done, so it is mostly in the past: 甲斐があった, 甲斐がなかった.
As a suffix
Verb ます-stem + がい
やります → やりがい. A few are everyday words, listed below.
- Before it
- What you put in: 努力した, 練習した, 待った, 来た. Or a noun for it: 努力, 苦労, 応援.
- After it
- 甲斐があって、… goes on to the good result. In writing also 甲斐があり.
- Where you'll meet it
- Conversation and writing alike.
In use
We waited in line for an hour, but it was worth the wait. This ramen is really good.
My hard work paid off, and I got into my first-choice university.
I took the time to explain it again and again, but they weren't convinced. All that talking was for nothing.
甲斐もなく: in vain
甲斐もなく opens the bad news: the effort was made, and it did no good. It is common in news and novels.
I stayed up all night studying, and failed the exam all the same.
やりがい, 生きがい: the がい words
On a ます-stem, がい makes a noun for the reward you feel in doing something.
やりがいthe sense that a job is worth doing
This job is hard, but it's rewarding.
生きがいwhat you live for
Playing with his grandchildren is what my grandfather lives for.
働きがいsatisfaction in your work
I care more about finding my work rewarding than about the pay.
Close neighbours
おかげでN3
"Thanks to": it credits a person, a thing or a piece of luck. 甲斐 is for an effort, and says it was worth making.
Thanks to my teacher, I passed the exam.
だけのことはあるN2
Starts from the result: it is as good as the effort, the price or the name led you to expect.
You can see why this hotel is expensive. The rooms and the food are wonderful.
Check yourself
1Which one fits?
朝五時に
Choose an answer to see why.
2What does this mean?
手術の
Choose an answer to see why.
3Which one fits?
娘は
Choose an answer to see why.
More detail
People make new がい words as they need them: 教えがい (rewarding to teach), 作りがい (rewarding to cook for).
They eat so well that it's a pleasure to cook for them.
More sentences
His time studying abroad paid off: his English is now good enough to use at work.
Getting up early to wait in line paid off: I managed to buy the limited edition.
The careful checking paid off: I found a mistake in the report before it was handed in.
Our family's cheering paid off, and my sister made it to the finish.
The tournament was canceled, so six months of preparation came to nothing.