How to Read “歯に衣着せぬ”
Ha ni kinu kisenu
Meaning of “歯に衣着せぬ”
“Teeth wear no clothes” means to speak one’s thoughts frankly and directly without reservation.
This expression describes the manner of stating one’s thoughts and opinions straightforwardly without considering the other person’s position or feelings. While there is no malicious intent, it refers to the characteristic of people who express their true feelings directly without using social pleasantries or pretense.
As for usage situations, it is often used when explaining someone’s personality. It is used to express a person’s frankness or honesty, such as “That person speaks in a ‘teeth wear no clothes’ manner.” It can also be used as a preface for one’s own statements, such as “Speaking with teeth wear no clothes, but…”
The reason for using this expression is that frankness is sometimes a valuable quality. In situations where truth tends to become obscured by flattery and pretense, the presence of people who speak their true feelings holds important meaning. Even today, this phrase is used to express honest and straightforward character, and in most cases, it is used with trust and appreciation for that person.
Origin and Etymology
“Teeth wear no clothes” has a very interesting linguistic origin. This expression is said to have begun being used from the Edo period, and it literally comes from the meaning of “not putting clothes on teeth.”
Why “teeth”? This comes from the fact that teeth are visible when people speak, so teeth were regarded as a symbol of words. And “putting on clothes” is a metaphorical expression for concealing or sugar-coating things.
In other words, not putting clothes (concealment) on teeth (words) means to state things as they are without embellishing words. People of the Edo period used such clever metaphors to express the manner of speaking about things frankly.
The background to this expression taking root lies in the townspeople culture of the Edo period. Among merchants and craftsmen, there was a tendency to value true feelings over pretense, and direct speech was preferred over roundabout expressions. It is thought that in such cultural soil, the expression “teeth wear no clothes” resonated with people’s hearts and came to be widely used.
Interesting Facts
What’s interesting about the expression “teeth wear no clothes” is the peculiarity of the idea of actually putting something on teeth. Realistically speaking, it’s impossible to put clothes on teeth, and even if you could, you wouldn’t be able to speak. This physical impossibility might be what creates the effect of emphasizing the frankness of not embellishing words.
Also, this proverb is particularly creative among metaphorical expressions using body parts. While there are many expressions using the mouth or tongue, such as “put a lid on one’s mouth” or “be tongue-tied,” proverbs focusing on “teeth” are rare, demonstrating the rich expressiveness of the Japanese language.
Usage Examples
- She has a “teeth wear no clothes” personality, so you can hear truly necessary opinions in meetings
- Speaking with teeth wear no clothes, I think this project needs to be reconsidered
Modern Interpretation
In modern society, the expression “teeth wear no clothes” has come to have complex meanings. With the spread of social media, we have entered an era where anyone can easily express their opinions. However, as a result, the boundary between “frankness” and “lack of consideration” has become ambiguous.
On the internet, “teeth wear no clothes” statements often cause “flame wars.” In environments protected by anonymity, there are cases where speech goes beyond the original “frankness” and transforms into merely aggressive behavior. This is a phenomenon that differs greatly from the positive nuance of “honest and trustworthy character” that this proverb originally possessed.
On the other hand, in the corporate and political worlds, where pretense and superficial statements are rampant, the value of personnel who speak their true feelings is being recognized anew. Especially in situations where leadership is required, the frankness of “teeth wear no clothes” often leads to organizational growth.
In modern times, new interpretations have emerged for this old proverb. That is the concept of “frankness that doesn’t forget consideration for others.” Rather than simply saying what one thinks, it means conveying one’s true feelings at appropriate times with constructive purposes. This might be the “teeth wear no clothes” attitude required in modern society.
When AI Hears This
The expression “ha ni koromo kisenu” (speaking without clothing one’s teeth) possesses a particularly ingenious structure among Japanese bodily metaphors. Teeth are naturally the hardest and sharpest parts within the mouth, serving the aggressive function of crushing and breaking down food. Clothing, on the other hand, plays a defensive role—protecting us from the outside world and maintaining social propriety. By combining these two opposing elements, the core of Japanese linguistic philosophy emerges.
What’s fascinating is why Japanese chose “teeth” rather than “tongue” for this expression. The tongue, as the organ governing taste and speech, connects more directly to language itself. Yet Japanese deliberately selected “teeth.” This likely stems from attention to teeth’s inherent “cutting power” and “penetrating force.” Teeth expose the essence of food, crushing it to reveal its truth.
This bodily perspective deeply connects with Japanese “honne and tatemae” (true feelings versus public facade) culture. Normally, we dress our words in various forms of “clothing”—honorific language, euphemisms, the culture of reading between the lines—all techniques for “wrapping” our words. However, sometimes we must strip away that clothing and speak truth with the raw sharpness of bare teeth.
“Ha ni koromo kisenu” doesn’t merely represent direct speech. Rather, it tells the story of how Japanese people view language as an “extension of the body” and reveals their delicate balancing act between social harmony and personal truth—making this expression a crystallization of linguistic culture itself.
Lessons for Today
What the proverb “teeth wear no clothes” teaches us in modern times is what true frankness is. It’s not simply voicing what one thinks, but the courage to convey necessary truths after understanding the other person and the situation.
In modern society, superficial relationships and conversations based on pretense tend to increase. However, in truly important situations, someone needs to have the courage to speak their true feelings. This can lead organizations in good directions and make human relationships deeper.
However, when making “teeth wear no clothes” statements, one must not forget the purpose and respect for others. Rather than criticism for the sake of criticism, feelings aimed at constructive improvement are important. Also, it’s important to choose appropriate timing while being considerate of the other person’s position and emotions.
You too should have the courage of “teeth wear no clothes” in important situations. And at the same time, please cherish people who give such frank opinions. It’s because there are people who speak the truth that we can move forward in better directions.


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