Kosei (こうせい)

Kosei is read こうせい and has 4 beats. Our data lists 2 spellings: 興生 and 興成. All two are masculine.

Reading

こ·う·せ·い (4 beats)

Kanji spellings

2 in our data

Gender

Masculine

Source

JMnedict, the open name dictionary

Kanji spellings of Kosei

One sound can be written with different kanji. Each spelling below is a different name on paper.

  • 興生
    こうせい
    Masculine

    Prosper + life

    • 興(こう)— prosper
    • 生(せい)— life
  • 興成
    こうせい
    Masculine

    Prosper + become

    • 興(こう)— prosper
    • 成(せい)— become

The kanji in Kosei

What each kanji means on its own, and in how many of the spellings above it appears.

  • 興prosper2 spellings
  • 生life1 spelling
  • 成become1 spelling

Kosei with common surnames

Full names with a different spelling and surname on each card. Tap a card for the kanji breakdown.

Questions about Kosei

Is Kosei a boy's or a girl's name?

In our data every spelling of Kosei is masculine.

What does Kosei mean?

Kosei is a sound, so the meaning comes from the kanji: 興生 reads as "prosper + life" and 興成 reads as "prosper + become". Those come from what each kanji means by itself, and parents may have had a fuller picture in mind.

How many ways can Kosei be written in kanji?

Our data lists 2: 興生 and 興成. Other spellings exist, so ask how a person writes their own name before you write it for them.

How do you pronounce Kosei?

こうせい is 4 beats: こ · う · せ · い. Give every beat the same length and keep vowels short and clear; Japanese has no stressed syllable the way English does.

Where this comes from

The spellings are from our hand-reviewed list of everyday names and from JMnedict, the open Japanese name dictionary. Meanings are built from what each kanji means on its own, so they describe the characters, not what a particular family had in mind.

How we check names · Content last reviewed: 2026-11-08.

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