The Japanese language has a complex system of honorifics and politeness levels, which can be difficult to master. This is where the four letter words come in. They are a set of four-letter words that are used to replace honorifics and politeness levels.
In the Japanese language, there are two types of verbs: ichidan verbs and godan verbs. Ichidan verbs end with an “i” sound and godan verbs end with an “u” sound.
Ichidan verbs are further divided into three groups: 一段 (one level), 二段 (two levels), or 三段 (three levels). The verb ending changes depending on the group it belongs to.
4 letter Japanese Names

List of Japanese Names that has 4 letters.
- Aika
- Aiko
- Aimi
- Akio
- Chie
- Chou
- Eiji
- Eiko
- Etsu
- Fuji
- Goro
- Hana
- Hide
- Hiro
- Hisa
- Isao
- Ishi
- Iwao
- Jiro
- Juro
- Kami
- Kana
- Kata
- Kaya
- Kiku
- Kimi
- Koji
- Koko
- Koto
- Kuma
- Kumi
- Kura
- Kuri
- Kuro
- Kyou
- Maki
- Maro
- Masa
- Miho
- Mika
- Miki
- Mina
- Mine
- Miwa
- Miyo
- Momo
- Mura
- Nami
- Nana
- Nobu
- Nori
- Rika
- Riko
- Rini
- Ryuu
- Sada
- Saki
- Saku
- Shig
- Shin
- Shou
- Sora
- Suki
- Sumi
- Suzu
- Tama
- Tani
- Taro
- Toki
- Tomi
- Tomo
- Tori
- Toru
- YamaYasu
- Yoko
- Yori
- Yuji
- Yuka
- Yuki
- Yuko
- Yumi
Please note that, if you use these names to name your child or anything good, make sure that those are of good meaning.