For a biological brother:
* Kaikuahine: This refers to a brother, specifically a younger brother.
* Keikuaʻāne: This is a more general term for "brother," but it doesn't specify age.
* Keiki: This means "child," and can be used to refer to a brother in a casual context.
For a brother in a broader sense:
* Kānaka: This means "person," and can be used to refer to a close friend or someone you consider like a brother.
* ʻOhana: This means "family," and can be used to refer to a group of people who are close to you, like a brotherhood.
For a brother-like relationship:
* Kūkulu: This means "to build," and can be used to refer to someone who is a strong supporter or a close confidant.
Ultimately, the best way to say "brother" in Hawaiian depends on the specific relationship and context.