au-vs-machiawaseru

You want to say “let’s meet up” in Japanese — but which word do you reach for? 会う (au) and 待ち合わせる (machiawaseru) both involve meeting someone, but they describe very different situations. Pick the wrong one and you might accidentally suggest a chance encounter when you meant a planned rendezvous, or sound overly formal when you just want to grab coffee. This guide breaks down exactly when to use each word.

Yuka

Rei, my teacher mentioned 会う and 待ち合わせる today. What’s the difference?

Rei

Great question! Both come up a lot in everyday Japanese. The trick is knowing which context calls for which — let me show you!

At a Glance: 会う vs. 待ち合わせる

会う (au) — Meet or See Someone

会う means “to meet” or “to see” someone. It is an う-verb and one of the first verbs learners encounter. It covers a wide range of encounters — from a scheduled appointment to a random bump-in on the street. The key point: 会う describes the act of being in the same place as someone, whether or not you planned it.

The standard sentence pattern is: [person] と 会う — “meet with [person].”

Example 1 — scheduled meeting:

明日、先生と会います。
Ashita, sensei to aimasu.
I will meet with my teacher tomorrow.

Example 2 — chance encounter:

駅で偶然、田中さんに会った。
Eki de guuzen, Tanaka-san ni atta.
I ran into Tanaka-san at the station by chance.

Example 3 — meeting for the first time:

初めて彼女に会った日を覚えていますか？
Hajimete kanojo ni atta hi wo oboete imasu ka?
Do you remember the day you first met her?

Formation note: 会う conjugates as an う-verb: 会います (polite), 会った (past), 会わない (negative), 会って (te-form).

Yuka

I see… so context really matters with 会う? It’s not just about the literal meaning?

Rei

Right! Japanese often works that way. 会う especially has nuances that go beyond a direct translation — keep that in mind.

待ち合わせる (machiawaseru) — Meet Up at a Planned Spot

待ち合わせる means “to meet up (at an agreed time and place).” The word literally combines 待つ (matsu — to wait) and 合わせる (awaseru — to match/coordinate). The nuance is built right in: both people wait for each other at the same spot. This is always a pre-arranged meeting — you cannot use 待ち合わせる for a surprise encounter.

Common patterns: [place] で 待ち合わせる (meet up at [place]) or [person] と 待ち合わせる (meet up with [person]).

Example 1 — specific location:

渋谷の改札前で待ち合わせましょう。
Shibuya no kaisatsu mae de machiawasemashou.
Let’s meet up in front of the Shibuya ticket gates.

Example 2 — specifying a time:

3時にカフェで待ち合わせている。
Sanji ni kafe de machiawasete iru.
We are meeting up at the café at 3 o’clock.

Example 3 — making a plan:

どこで待ち合わせる？
Doko de machiawaseru?
Where should we meet up?

Formation note: 待ち合わせる is a る-verb: 待ち合わせます (polite), 待ち合わせた (past), 待ち合わせない (negative), 待ち合わせて (te-form).

Yuka

Got it. And 待ち合わせる — is that the opposite, or more like a different usage?

Rei

More of a different usage! 待ち合わせる carries its own feel. Comparing them together like this is actually the fastest way to master both.

The Critical Difference: Planned vs. Unplanned

The single biggest distinction is intentionality. 会う can describe any type of meeting — planned or unplanned. 待ち合わせる always and only describes a pre-arranged meeting where both parties agreed to be at a specific place at a specific time.

Think of it this way: if you bump into your friend on the street, you 会った them. You cannot say you 待ち合わせた — because neither of you was waiting for the other on purpose.

Also note the noun form: 待ち合わせ (machiawase) means “a meeting point” or “a rendezvous.” You’ll see signs at train stations saying things like 待ち合わせ場所 (machiawase basho — meeting spot).

Side-by-Side Comparison

Decision Flowchart: Which Word to Use?

Are you describing a meeting with someone?
        |
        v
Was it planned in advance with a specific time and place?
        |               |
       YES              NO
        |               |
        v               v
Did both people       Was it a chance encounter
agree to wait          or a general meeting?
at that spot?               |
        |                   v
       YES              Use 会う (au)
        |
        v
Use 待ち合わせる (machiawaseru)
(or 会う is also acceptable for
 the general act of meeting)

Quick Quiz — Test Yourself!

Yuka

I think I’ve finally got it! Let’s take the quiz to be sure.

Rei

Perfect confidence check! Let’s go — you’ve got this!

Fill in the blank with 会う or 待ち合わせる (conjugate as needed).

Q1. I ran into my teacher at the bookstore.
本屋で先生に＿＿＿。
Hon’ya de sensei ni ___.

Answer: 会った (atta)
Reason: A chance encounter uses 会う, not 待ち合わせる.

Q2. Where should we meet up?
どこで＿＿＿？
Doko de ___?

Answer: 待ち合わせる (machiawaseru)
Reason: Asking about a meeting location implies a planned rendezvous — 待ち合わせる fits perfectly.

Q3. I met my best friend for the first time in third grade.
親友と初めて＿＿＿のは小学3年生の時だ。
Shin’yuu to hajimete ___ no wa shougaku sannensee no toki da.

Answer: 会った (atta)
Reason: First meetings are always 会う — you can’t 待ち合わせ someone before you know them.

Q4. Let’s meet up at the station exit at 6 pm.
6時に駅の出口で＿＿＿ましょう。
Rokuji ni eki no deguchi de ___ mashou.

Answer: 待ち合わせ (machiawase)
Reason: A specific time and place makes this a classic 待ち合わせる situation.

Q5. Have you ever met a celebrity?
有名人に＿＿＿ことがありますか？
Yuumeijin ni ___ koto ga arimasu ka?

Answer: 会った (atta) → 会ったことがありますか？
Reason: This is a general “have you met” question — 会う works here. 待ち合わせる would imply you had a scheduled appointment with the celebrity.

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