What term describes someone who is a long-time resident of Hawaii?

The term "Kamaaina" specifically refers to a long-time resident of Hawaii. This word embodies the concept of being familiar with the local culture, traditions, and customs that come with living in the islands for an extended period. Kamaaina can also imply a sense of belonging and connection to the land and its community, which is highly valued in Hawaiian culture.

In contrast, while "Kahuna" refers to a priest or an expert in a particular field within Hawaiian traditions, it does not denote residency. "Kaki'o" is not a commonly recognized term in this context and does not relate to residency or being local. "Kahiko" usually refers to old or ancient, especially in connection with traditional practices or things from the past, but it does not imply a long-term residence. Thus, "Kamaaina" is the most suitable term for describing someone who has been a long-time resident of Hawaii.