How to Complain Politely in Japanese

Why a Japanese complaint sounds like a report

In many languages a complaint carries emotion on purpose: the annoyance in your voice is part of the message. Japanese conversation separates the two. The fact that something is wrong is stated plainly, but the feeling is kept out of the words and the tone, because emotion directed at a person puts them on the defensive and makes it harder for them to help you without losing face. The result is a style that sounds almost apologetic to a learner's ear and yet is understood immediately by staff as a problem that must be dealt with.

The useful way to think about it is that you are reporting, not accusing. The dish is cold; nobody is said to have let it go cold. The air conditioner does not seem to work; nobody is said to have failed to check it. Once you accept that the person in front of you is the route to a fix rather than the target of the complaint, the grammar falls into place. The three-part shape in the next section is what native speakers use dozens of times a week, from a wrong coffee order to a leaking tap.

The three-part shape: cushion, fact, request

Every polite complaint in this guide follows the same order. First a cushion, a short fixed phrase that signals something unwelcome is coming and takes the sting out of it. Second the fact, one sentence describing what is wrong, usually ending in n desu ga so that it trails politely instead of landing like a verdict. Third the request, which names the fix you want in a question form such as te itadakemasu ka, or hands the choice back with dō sureba ii deshō ka. The three parts are short. Together they take under ten seconds to say.

The request is the part learners forget, and without it a Japanese listener may apologise sincerely and then do nothing, because you never said what you wanted. State it. Kakunin shite itadakemasu ka asks them to check, torikaete itadakemasen ka asks for a replacement, nan to ka narimasen ka asks whether anything can be done when you are not sure what the fix is. Below, the three parts are shown separately so you can hear the seams, then combined into a single fluent complaint.

Cushion phrases and how heavy each one is

Cushions come in weights, and matching the weight to the situation is most of the skill. Sumimasen ga is the lightest and works at a counter, a table or a till. Mōshiwake nai no desu ga is heavier: it suits a hotel, a landlord, or a colleague who will have to redo something. Osore irimasu ga is formal, right for a front desk or a phone call to a company. Iinikui no desu ga, this is hard to say, prepares someone for a personal matter such as noise from their flat. Among friends the cushion shrinks to nee, chotto ii, and the complaint itself relaxes into plain forms.

Two habits separate a natural cushion from a clumsy one. It is said once, at the start, not repeated before every sentence. And it is followed immediately by the fact; a cushion left hanging while you search for words makes the listener anxious. Practise the cushion and the first half of the fact as one breath: mōshiwake nai no desu ga, heya no, and then whatever the problem is.

Stating the problem without blame

The fact sentence has three tools. N desu ga turns a bare statement into an explanation offered for the listener's consideration: chigau n desu ga rather than chigaimasu. Yō desu and mitai desu present what you observe as an appearance, which is how you avoid claiming that anyone did anything wrong; yō desu is a little more formal, mitai desu is everyday, and both often combine with n desu into yō na n desu ga or mitai na n desu ga. The third tool is verb choice. Intransitive and passive verbs describe the state, ugokanai, sōji sarete inai, morete iru, and keep the person out of the sentence entirely.

The lines below show the same wrong-order problem at three registers. To a friend who fetched your coffee, a plain n da kedo is right and n desu ga would sound oddly distant. To a colleague who sent you a file, mitai na n desu ga keeps it collegial. To a waiter, yō na n desu ga is polite and blameless. Learners most often fail by importing an English accusation: anata ga machigaemashita, you made a mistake, which is grammatical, direct, and guaranteed to make the exchange harder.

Situations and the opening line

The table gives a ready-made opening line for each common situation, already containing the cushion and the fact. Add the request from the earlier section that fits, or simply pause after the ga and let the other person respond, which is what native speakers do most of the time. Notice how the cushion weight rises from a restaurant to a landlord, and how the neighbour line adds a time apology, yabun ni sumimasen, because you are intruding on private space.

Restaurant, hotel and shop

Service settings are the easiest place to complain, because staff are trained for exactly this pattern. At a restaurant, state what is wrong with the dish and let the request be light: atatamenaoshite itadakemasu ka for a cold plate, or just the fact for a hair or a wrong order, since the staff will offer a replacement themselves. At a hotel, name the room number first, then the fault, then the fix, and expect a troubleshooting question first. In a shop, bring the receipt, say when you bought the item, describe the fault as a state, and ask whether return or exchange is possible rather than which one you want.

Expect a fixed set of replies. Mōshiwake gozaimasen followed by sugu ni kakunin itashimasu means they accept the problem and are checking. Shōshō o-machi kudasai means wait a moment. A question such as rimokon wa tamesaremashita ka is not doubt about your honesty; it is the first step of their procedure, so answer it plainly. The mistake learners make here is treating the troubleshooting question as pushback and hardening their tone, which turns a routine fix into a confrontation.

Neighbour and landlord

These two are harder because the relationship continues after the complaint. With a neighbour, introduce yourself, tonari no mono desu ga, apologise for the hour, describe the sound as something that carries rather than something they make, and use the softest request form in the language: te itadakeru to tasukarimasu, it would help me if you could. Adding kochira koso urusakattara sumimasen, and if we are ever noisy I apologise too, turns it into a mutual arrangement instead of a grievance. Most neighbours respond with a genuine sumimasen deshita and the problem stops.

With a landlord or management company, open formally with o-sewa ni natte orimasu, give your room number and name, then jitsu wa and the fact, using a time marker such as senshū kara so they know how long it has been going on. The request is usually to come and look, ichido mi ni kite itadakenai deshō ka, followed by a gentle question about timing. Landlords in Japan generally take repair reports seriously; what delays them is a vague message with no room number, no date and no clear ask.

Escalating one step when the first attempt fails

When nothing happens, the instinct is to get louder. In Japanese the effective move is to get more specific. Repeat the same three parts and add two elements: a time reference showing this is not the first request, sakihodo mo or nando mo mōshiwake nai no desu ga, and the word komaru, which tells the listener the problem is now causing you real difficulty. Komatte iru n desu is the strongest thing a polite speaker says in ordinary situations, and staff hear it as a signal to act. Then attach a deadline with dekireba kyōjū ni, and a request with dō ni ka shite itadakemasen ka.

If that still produces nothing, ask for the person in charge. Sekininsha no kata to o-hanashi dekimasu ka is calm, formal and impossible to refuse politely. Each of these steps raises the seriousness of the complaint while keeping your register exactly where it was, which is what makes them work; a customer who stays polite while clearly stating komatte imasu is treated as someone with a real problem rather than someone having a bad day.

What never to do

The behaviours below undo a complaint even when the grammar is perfect. They share one feature: each one turns a report into an attack on the person, and once that happens the listener's priority becomes managing you rather than fixing the problem. Learners rarely do these things deliberately. They happen when frustration leaks into forms borrowed from a first language, so it is worth knowing the specific Japanese shapes to avoid.

• Do not raise your voice. Volume reads as loss of control, not as seriousness; the seriousness signal is komatte imasu said quietly.
• Do not use command forms. Naose, shiro or shinasai to staff or a neighbour are insulting; even te kudasai is an instruction and belongs after they have agreed, not before.
• Do not use sarcasm such as subarashii sābisu desu ne. Irony is easily missed across languages and, when caught, is remembered.
• Do not put the person in the sentence. Anata ga machigaeta is an accusation; chigatte iru yō desu is a fact.
• Do not threaten reviews or authorities in the first exchange. Kuchikomi ni kakimasu yo ends cooperation instantly.
• Do not apologise so much that the request disappears. Three cushions and no ask leaves staff nodding and doing nothing.

Accepting the fix graciously

The complaint is not over when the problem is solved; it is over when you have closed it warmly. Staff will apologise again as they hand you the replacement or confirm the repair, and the expected reply is a short thanks that also releases them from the apology: arigatō gozaimasu with tasukarimashita, or o-tesū okake shimashita, which acknowledges the trouble they went to. If the fault turned out to be partly your misunderstanding, kochira koso sumimasen deshita repairs it in one line. Learners who simply take the fixed item and walk away leave a colder impression than the complaint itself did.

A full model exchange at a hotel front desk

• Round one: in the hotel roleplay mission, report the broken air conditioner using the exact three parts, and answer the teacher's troubleshooting question calmly.
• Round two: ask the AI Sensei to play staff who forget. Return after a pause with sakihodo mo onegai shita no desu ga and add komatte iru n desu.
• Round three: switch to the cafe mission and complain about a cold dish at the lightest register, sumimasen ga and yō na n desu ga, then accept the replacement with o-tesū okake shimashita.
• Round four: play a neighbour conversation. Introduce yourself, use te itadakeru to tasukarimasu, and close with kochira koso urusakattara sumimasen.

Every move from the guide is in this exchange. The guest identifies the room, cushions with mōshiwake nai no desu ga, states the fault as yō na n desu, answers the troubleshooting question without irritation, and asks about a room change as a conditional fallback rather than a demand. The staff member's lines are worth learning too, since ikaga nasaimashita ka and taihen o-matase itashimashita are what you will hear in every hotel in the country. Say both roles aloud, then swap the fault: a shower with no hot water, a key that does not open the door, noise from the next room.