You walk into a Japanese city office ready for paperwork. You're careful with your polite Japanese. The clerk replies, “Un, un.” At a clinic you hear “Hee.” At a shop, someone cheerfully stretches “Daijōbu deeesu.”
Did everyone quietly agree to stop being formal except you?
Not exactly. Those three sounds do different jobs. Treating them all as “rude Japanese” misses the best part of the conversation.
The little “un, un” isn't necessarily a grammar switch
Imagine the clerk saying, “Please fill in this box,” then “Mm-hmm, that's right,” then “Please take a number.” The instructions remain polite. Only the listener's quick response has become casual.
In Japanese, a short acknowledgment and a full explanation don't always use the same level of formality. Un can function like “mm-hmm.” Hee can signal surprise or interest. Neither word, by itself, reveals what the speaker thinks of you.
This isn't just a convenient excuse. Researchers studying first-time conversations among older Japanese women observed differences between how people spoke at length and how they responded while listening. People adjusted the politeness of their responses during the interaction. That was not a study of retail staff or government counters, so it can't explain this particular clerk's motives. It does show why “the clerk said un” is not enough evidence for “the clerk looked down on me.”
“Write here, okay?” is different
A clerk might switch from the equivalent of “Please complete this field” to “Write here, okay?”
Now the instruction itself sounds less formal. Maybe the clerk is trying to be approachable. Maybe that's simply how they speak. Maybe there's an age gap. The words alone cannot settle the question.
And friendly intent doesn't guarantee a friendly result. What feels reassuring to one customer may feel patronizing to another.
There's an even more revealing example: “I'm in this department, so I don't really know that one, haha.” Admitting you don't know is better than inventing an answer. But if the customer is left with no idea where to go next, the warmth hasn't solved the problem.
Neighborhood-aunt energy; paperwork still lost in the building.
“Daijōbu deeesu” still has a polite ending
This one's sneaky. Daijōbu desu means something like “That's fine.” The desu is still there, even if the speaker stretches it into a sing-song deeesu.
The voice is relaxed. The sentence hasn't necessarily become plain-form Japanese. Tone, rhythm, and grammar all contribute to how polite something feels.
So our supposed three-for-three streak of casual speech turns out to be three different things: a relaxed acknowledgment, a less-formal instruction, and a polite sentence delivered warmly.
A whole politeness scandal, and one suspect wasn't even guilty of dropping the polite ending.
The better test: what did the person actually do?
Did the clerk listen to the question? Did they explain the next step? If they didn't know, did they point you to someone who might? Did they stay respectful when you needed clarification?
Someone can say “Un, un” while helping you carefully. Someone else can use flawless formal Japanese while brushing you off.
That doesn't mean you must enjoy a familiar tone. If it feels uncomfortable, asking for a clearer or more formal explanation is reasonable. And you don't have to mirror the clerk's casual speech. Your polite reply can stay exactly as it is.
Why did several people sound unusually friendly on one particular day? We don't know. Age, mood, circumstances and speaking habits could all play a role. A few conversations can't identify the cause.
But one thing is clear: Japanese politeness doesn't have a single on/off switch.
The words are formal, the backchannel is casual, and the voice has already invited the entire neighborhood.
Further reading
- Study of politeness in first-time conversations among older Japanese women (J-STAGE)
- Analysis of listener responses and politeness (J-STAGE)
