LESSON NOTES · レッスンノート

N5Lesson notes · Sep 30, 2026

Later and soon in Japanese: 後あとで, もうすぐ, すぐ and the そのうち that may never come

"Later" in Japanese is usually 後あとで (あとで); the polite version is 後あとほど (のちほど). "Soon" splits into もうすぐ (it is almost here), すぐ (right away) and まもなく (the station-announcement one) — and そのうち means "some day", which is easy to mistake for a promise.

English gets by with two words, "later" and "soon", and leans on tone of voice to say how far away that really is. Japanese chooses a different word depending on how far off the thing is and how formal you need to be. Once you have the map, most of the confusion goes away.

The basics

How do you say "later" in Japanese?

Say 後あとで (あとで). It is the plain, everyday word for "later" or "afterwards", and it works with friends, coworkers and shop staff alike.

後あとで電話でんわします。 — I'll call you later. (polite, neutral) 後あとでメールするね。 — I'll message you later. (casual, to a friend) その話はなしは後あとで。 — Let's talk about that later. (short and natural, no verb needed)

Notice that 後あとで does not say how much later. It can mean in ten minutes or tomorrow; the context decides. It also works as a stand-alone reply: if someone asks you something and you are busy, 後あとで。 is a complete answer.

How do you say "see you later"?

Add また ("again") in front: また後あとで. It is the natural "see you later" when you expect to meet the same person again soon, often the same day.

じゃあ、また後あとで。 — Well then, see you later. (casual to neutral, you will meet again soon) また後あとでね。 — See you later! (casual, friendly)

If you have not met the person yet and just want "again" more broadly, see our note on また and もう一度いちど. In anime, a character who says あとでな or あとでね is usually leaving with a plan to reconnect, not saying goodbye for good.

How do you say "later" politely, like in business?

Use 後あとほど (のちほど). It has the same core meaning as 後あとで, but it sounds formal and is common in customer service, emails and announcements. Note that the reading is のちほど, not あとほど.

後あとほどご連絡れんらくいたします。 — I will contact you later. (very formal, business) 詳くわしくは後あとほどご説明せつめいします。 — I will explain the details later. (formal, presenter or staff)

With friends, のちほど sounds oddly stiff, like answering a text with a memo. Keep it for people you would address with 敬語けいご.

How do you say "soon" in Japanese?

The safest general word is もうすぐ. It means "in a short while", and it feels like the thing is already approaching: a season, an arrival, a finish line.

もうすぐ夏なつですね。 — It'll be summer soon. (polite, small talk) もうすぐ着つきます。 — I'll arrive soon. (polite, on your way somewhere) もうすぐ終おわるよ。 — It's almost done. (casual, encouraging someone)

Pair もうすぐ with something that has not happened yet. It describes the near future, so you would not use it for something already in the past.

What does すぐ mean?

すぐ means "right away" or "immediately". It is about how little time passes between a point and an action, not about how near the future is.

すぐ行いきます。 — I'll come right away. (polite, someone calls you) 今いますぐ来きて。 — Come right now. (casual, urgent) 駅えきはすぐそこです。 — The station is right there. (polite, すぐ also works for distance)

The distance use is worth remembering. すぐそこ, すぐ近ちかく and すぐ隣となり all mean "very close by". The word is really about smallness of the gap, in time or in space.

Beyond the basics

Where do you hear まもなく?

まもなく (間あいだもなく) means "shortly", and you will meet it almost every day on the train. It is formal, and it is the word for announcements.

まもなく電車でんしゃが参まいります。 — The train will arrive shortly. (formal, station announcement)

If you use it in ordinary chat it sounds like you are reading out a public notice. To go deeper on the vocabulary around stations, see our list of Japanese transportation vocabulary.

Is すぐ always really "immediately"?

Not always. In real life すぐ行いきます is often a polite, reassuring phrase, and the actual wait can be a few minutes or more. Someone at a shop saying すぐお持もちします is usually promising that they will start soon, not timing it to the second. So treat すぐ as "I'm on it", and be relaxed if it takes a little while.

This is one of the places where learners get puzzled in real lessons: the dictionary says "immediately", and reality is a soft, friendly "coming!"

What does そのうち mean?

そのうち means "one of these days", "before long", or "sooner or later". It points to a future that is unspecified on purpose.

そのうち遊あそびに行いくね。 — I'll come and visit one of these days. (casual, friendly and vague) そのうち慣なれますよ。 — You'll get used to it before long. (polite, reassurance)

There are two ways to hear it. When it is about something that will naturally happen, like getting used to a new job, it is a genuine prediction. When it is about an invitation, そのうち can be a warm but noncommittal answer: a way to keep things pleasant without fixing a date. Listen to tone and whether a date follows. If no one names a day, treat it as "maybe, no plans yet". I would not say it always means "no", though.

And いずれ?

いずれ means "sooner or later" or "eventually", with a slightly more formal, written feel than そのうち.

いずれ分わかることです。 — It will become clear eventually. (formal-leaning, writing or serious talk) いずれまた。 — Until another time. (polite, a gentle "let's meet again someday")

You will meet いずれ more in writing and in business talk than in casual chat. The related いずれ also shows up in fixed phrases like いずれにしても ("in any case"), which is a good reason to recognise it even if you rarely say it.

How is 後あとで different from 後あと?

They are not the same word. 後あとで is "later" as a stand-alone time word. 後あと (あと) on its own is a noun meaning "after" or "the remainder", as in 食たべた後あとで ("after eating"). That is a grammar pattern, and it is covered in our separate notes on 〜てから, so I will only flag the difference here.

Isn't もうすぐ the same as ほとんど?

No. もうすぐ is about time: something is nearly here. ほとんど is about amount: "almost all" or "hardly any". もうすぐ終おわる means "it will finish soon"; ほとんど終おわった means "it is mostly finished". Our note on ほとんど and ほぼ covers the second one.

Common mistakes

  • Using のちほど with friends. It is correct, but it sounds like a business email in a coffee shop. Use 後あとで.
  • Using まもなく in casual talk. It is announcement language. In conversation, もうすぐ is the natural choice.
  • Treating すぐ as a stopwatch. Sometimes すぐ is literal, sometimes it is a friendly "coming!". Read the situation.
  • Taking そのうち as a firm plan. It is deliberately open-ended, so if you want to meet, propose a date.
  • Confusing 後あと and 後あとで. 後あとで by itself is "later"; 食たべた後あとで is a different pattern, "after eating".
  • Using もうすぐ for the past. もうすぐ points forward, so it goes with what is about to happen.

The map: how far, and how formal

Word How far off Feel
すぐ The gap is tiny, right after now Neutral, everyday; can be a soft "coming!"
もうすぐ Approaching, close on the horizon Neutral, everyday
まもなく Close, "shortly" Formal; announcements
後あとで Not now, no length given Neutral, everyday
後あとほど Not now, no length given Formal; business
そのうち Some day, unspecified Casual to neutral; can be vague on purpose
いずれ Eventually, unspecified Formal-leaning; writing

FAQ

Is 後あとで the same as あとで written in kana? Yes, 後あとで and あとで are the same word. Both are common; kana is often used in casual messages and books for learners.

What is the difference between すぐ and もうすぐ? すぐ is about acting with almost no delay ("right away"). もうすぐ is about something arriving soon ("almost time"). すぐ行いきます means you will go right away; もうすぐ着つきます means you are almost there.

Can I say 後あとで to my boss? Yes, in the polite form: 後あとでご連絡れんらくします is fine, and 後あとほど is even more formal. Both are acceptable in the workplace; のちほど is the safer choice for customers.

Does そのうち mean "never"? No, it does not mean that literally. It means "sometime in the future" without saying when. In invitations it can be a soft, non-committal answer, so ask for a date if you want a real plan.

Can すぐ be about distance too? Yes. すぐそこ, すぐ近ちかく and すぐ隣となり all mean "very close by". The word is about a small gap, whether in time or in space.

Practice

Build each answer before opening it. Questions 4 and 5 are a pair: two words for "soon", one about how close something is and one about how fast you act.

1. Say "I'll call you later" in polite Japanese.

Show answer

後あとで電話でんわします — 後あとで is the neutral, everyday "later".

2. You are leaving a coworker's desk and will see them again this afternoon. What do you say?

Show answer

また後あとで — the natural "see you later" for someone you will meet again soon.

3. You are writing a customer email and want to say "I will contact you later". Which word do you choose, 後あとで or 後あとほど?

Show answer

後あとほど — 後あとほどご連絡れんらくいたします. It is the formal register expected in customer-facing writing.

4. A friend asks when you will arrive. You are nearly at the station. What do you say?

Show answer

もうすぐ着つくよ — もうすぐ describes something close and approaching. This pairs with question 5.

5. Your friend says "Come here!" and you want to say "I'm coming right away". Which word fits?

Show answer

すぐ行いくよ — すぐ is about acting with almost no delay, not about how close a date is.

6. Which word do you hear in a station announcement: まもなく or そのうち?

Show answer

まもなく — まもなく電車でんしゃが参まいります. It is formal, announcement language; そのうち is casual and vague.

7. A new acquaintance says そのうち遊あそびに来きてね. Is that a fixed plan?

Show answer

Not necessarily. そのうち means "one of these days", with no date. It can be a warm, open-ended invitation, so suggest a specific day if you want to actually meet.

8. 食たべた後あとで is "after eating". Is the 後あとで here the same stand-alone "later" as in 後あとで電話でんわします?

Show answer

No, it is a different pattern. In 食たべた後あとで, 後あと is a noun meaning "after" attached to a verb. In 後あとで電話でんわします, 後あとで is a free-standing time word for "later".

9. What is the difference in meaning between もうすぐ終おわる and ほとんど終おわった?

Show answer

もうすぐ終おわる means it will finish soon (time); ほとんど終おわった means it is mostly finished already (amount).

During a trial lesson, promise 後あとで, もうすぐ and すぐ in the right situations, and see why そのうち is the one that may never come.

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab — the first column becomes the front, the second the back.

後で	あとで — later, afterwards
後ほど	のちほど — later (formal)
また	また — again
もうすぐ	もうすぐ — soon, almost here
すぐ	すぐ — right away, right nearby
まもなく	まもなく — shortly (announcements)
そのうち	そのうち — one of these days, before long
いずれ	いずれ — sooner or later, eventually
後	あと — after
連絡する	れんらくする — to contact
説明する	せつめいする — to explain
着く	つく — to arrive
終わる	おわる — to finish
慣れる	なれる — to get used to
電車	でんしゃ — train
夏	なつ — summer
ほとんど	ほとんど — almost all, mostly

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime, so most of the example sentences on this blog come from lines I've actually heard students ask about — including this one, since "later" and "soon" come up early in almost every learner's lessons. For practice with feedback, Book a trial lesson · $13, or work through Japanese practice exercises first.

Sources: the author's own lessons and standard reference grammars.

More drills like the ones above, plus a timed JLPT-style mock test: Practice · N5 · Read something at this level: JLPT N5 stories with audio

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