What is the word tomboy in Japanese?

There isn't a single, direct translation of "tomboy" in Japanese. It's a concept that doesn't quite exist in the same way in Japanese culture.

Here are some possible ways to express the idea of a "tomboy" in Japanese:

* おてんば (otenba): This is the most common way to describe a girl who is energetic, boisterous, and enjoys rough-and-tumble activities. It literally means "wild girl" and can have a slightly negative connotation, implying a lack of femininity.

* 活発な女の子 (katsuhatsu na onna no ko): This literally means "active girl" and is a more neutral and positive way to describe a tomboy.

* 男の子っぽい女の子 (otoko no ko-ppoi onna no ko): This literally means "girl who is like a boy" and emphasizes the tomboyish qualities of a girl.

* 男勝りな女の子 (otoko-gatchiri na onna no ko): This literally means "girl who is like a man" and is a more formal and sometimes outdated way to describe a tomboy.

The best way to express the concept of a "tomboy" will depend on the context and the tone you want to convey.