Sein is of Japanese origin, meaning "clear" or "calm". It's composed of two kanji characters: 静 (sei), which signifies tranquility or calmness, and 情 (jin), symbolizing feeling or emotion. This results in a name that harmoniously combines serenity with deep emotion. In Japan, Sein is more commonly used as a female name but can also be found among males. It's often spelled as Seien in its kanji form. The name has gained international recognition due to its usage in popular culture, notably through the character Seinfeld in the hit sitcom "Seinfeld". However, it's important to note that the character's name is a play on words and does not directly translate to or derive from Japanese.
Sein is quite an unusual name, with only six people being named as such from 2003 onwards. This suggests that it's not a particularly popular choice or perhaps could indicate a small community where the name has been passed down through generations.