One trip, two jobs
Tsuide ni tells your listener that the second action is riding along with the first. You were going anyway; the extra is convenient because of that.
The idea is familiar from English, but Japanese uses it far more often, and it is one of the lightest ways to add a request without making it feel like a burden.
| Japanese | Romaji | Meaning |
|---|---|---|
| ついでに牛乳も買ってきて。 | Tsuide ni gyūnyū mo katte kite. | Pick up some milk too while you are out. |
| ついでに、これもお願いできる？ | Tsuide ni, kore mo onegai dekiru? | While you are at it, could you do this too? |
How tsuide ni attaches
The main action comes first, with tsuide ni after it, and the extra action follows. The tense of the first verb decides whether the extra happens on the way or once you have arrived.
| Japanese | Romaji | Meaning |
|---|---|---|
| 買い物に行くついでに、郵便局に寄ります。 | Kaimono ni iku tsuide ni, yūbinkyoku ni yorimasu. | I will stop by the post office on my way shopping. |
| 東京に来たついでに、友達に会いました。 | Tōkyō ni kita tsuide ni, tomodachi ni aimashita. | Since I was in Tokyo anyway, I met a friend. |
| 散歩のついでに、パンを買いました。 | Sanpo no tsuide ni, pan o kaimashita. | I bought bread while I was out for a walk. |
| Before tsuide ni | Form to use | Sense |
|---|---|---|
| Verb, on the way | Dictionary form | While going or doing |
| Verb, having arrived | Past ta form | Since I was already there |
| Noun | Noun plus no | On the occasion of |
| Nothing | Tsuide ni at the start | While we are at it |
Keeping the main action first
The order carries the meaning. Whatever comes before tsuide ni is the real reason for the trip, and whatever comes after is the extra. Swap them and you change what the trip was for.
| Japanese | Romaji | Meaning |
|---|---|---|
| 銀行に行くついでに、コンビニでお茶を買った。 | Ginkō ni iku tsuide ni, konbini de ocha o katta. | On my way to the bank, I bought tea at the convenience store. |
| コンビニに行くついでに、銀行にも寄った。 | Konbini ni iku tsuide ni, ginkō ni mo yotta. | On my way to the convenience store, I also stopped at the bank. |
- Main purpose before tsuide ni, the extra after it.
- The extra should be small; big separate tasks sound strange as an add-on.
- Mo on the extra item, as in gyūnyū mo, often underlines that it is additional.
- Both actions should happen in the same outing or occasion.
Asking a small favour
Tsuide ni is the natural frame for a small request to someone who is already going somewhere. It keeps the pressure low, because it tells them you are not asking for a special trip.
In formal settings the afterthought feeling can backfire. For clients and superiors, no sai ni, meaning on the occasion of, keeps the convenience idea without sounding offhand.
| Japanese | Romaji | Meaning |
|---|---|---|
| コンビニに行くなら、ついでにこれも出してきてくれる？ | Konbini ni iku nara, tsuide ni kore mo dashite kite kureru? | If you are going to the convenience store, could you post this too? |
| ついでの時でいいよ。 | Tsuide no toki de ii yo. | Whenever it is convenient is fine. |
| 次回いらっしゃる際に、資料をお持ちいただけますか。 | Jikai irassharu sai ni, shiryō o o-mochi itadakemasu ka. | Could you bring the documents next time you visit? (formal) |
Tsuide as a noun
Tsuide also stands alone as a noun meaning a convenient opportunity. It appears in phrases for dropping by and in replies that play down a favour.
Tsuide datta node is a gracious way to accept thanks: it was on my way, so do not worry about it.
| Japanese | Romaji | Meaning |
|---|---|---|
| 近くに来るついでがあったら、寄ってね。 | Chikaku ni kuru tsuide ga attara, yotte ne. | If you are ever passing nearby, drop by. |
| ついでだったので、気にしないでください。 | Tsuide datta node, ki ni shinaide kudasai. | It was on my way, so please do not worry about it. |
When tsuide ni sounds careless
Because tsuide ni frames something as secondary, it can make a gift or a gesture sound unplanned. Saying a present was bought tsuide ni tells the person it was not a special trip, which is fine between close friends and slightly deflating elsewhere.
It can also sound dismissive when the extra is actually the important part, such as tacking a serious request onto small talk.
- Avoid tsuide ni when giving a gift you want to feel special.
- Do not use tsuide ni for a request that matters to a client.
- Use it freely to reduce the weight of a favour someone thanks you for.
- For a serious request, ask directly and separately.