Kasa-kasa (カサカサ) is a versatile Japanese onomatopoeia used primarily to describe two distinct sensations: the sound of dry, light objects rubbing together (rustling) and the physical state of dryness, particularly regarding human skin.
If you have spent any time in Japan during the winter, you have almost certainly heard the term kasa-kasa. Whether you are browsing the aisles of a local Matsumotokiyoshi drugstore or listening to a weather report, this word is a staple of daily life. As someone who has survived many brutal, low-humidity Tokyo winters, I can tell you that kasa-kasa is the enemy of every person’s moisturizing routine.
The Two Faces of Kasa-kasa
Japanese onomatopoeia is famously nuanced, and kasa-kasa is no exception. It splits its personality into two categories: sensory sounds and physical conditions.
1. The Sound of Rustling
At its most literal, kasa-kasa mimics the sound of light, dry materials moving. Think of the sound of a plastic bag being crumpled, the rustle of fallen autumn leaves underfoot, or the scratching of a small insect scurrying across the floor. If a cockroach (the bane of summer in Japan) is running across your tatami mat, you might describe the noise as kasa-kasa.
2. The Feeling of Dryness
This is where the term becomes deeply personal. In Japan, when the air turns crisp and cold, the humidity drops, and our skin begins to lose its elasticity. We describe this sensation—chapped lips, dry hands, or rough heels—as kasa-kasa. If you tell a Japanese colleague that your hands are kasa-kasa, do not be surprised if they immediately offer you hand cream. It is a shared cultural acknowledgment of the season.
Pro-Tip: Don’t confuse kasa-kasa with pata-pata! While kasa-kasa is the dry, scratchy sound of movement, Pata-pata refers to the rhythmic, lighter flapping or pattering sounds of movement. Using the wrong one can definitely confuse your listeners.
Common Mistakes Foreigners Make
One common mistake I see learners make is using kasa-kasa to describe any dry object. It is specifically for light, dry, often paper-like or thin textures. You wouldn’t use it to describe a dry piece of steak (which would be pasa-pasa). Using kasa-kasa for food suggests the food is thin, light, and crumbles, not just lacking moisture.
Additionally, remember that kasa-kasa for skin is not just a description—it’s a call to action. In Japan, pointing out someone’s dry skin is not considered an insult; it’s an act of care. If you are struggling with the cultural nuances of such interactions, it is always helpful to brush up on how to handle social exchanges politely, much like the Teinei (The Hidden Cultural Code Governing Japanese Life) suggests.
Slang Variations
In modern youth slang, kasa-kasa can sometimes be used metaphorically. For instance, if someone is described as having a kasa-kasa personality, it might imply they are “dry” or “lacking emotional depth.” However, this is quite rare compared to its literal use. Stay safe and stick to using it for skin and rustling sounds to avoid confusion!
Friend: “Kyou wa samui ne. Te ga kasa-kasa ni natchau.” (It’s cold today, isn’t it? My hands are getting all dry/chapped.)
You: “Honto da ne. Hand cream motteru?” (It really is. Do you have any hand cream?)
By mastering these small onomatopoeic details, you bridge the gap between being a tourist and someone who truly understands the rhythm and texture of Japanese life.
