The term hapa comes from a Hawaiian Pidgin word that denotes a part or fragment of something, itself a loan from the English word half. When applied to people, this denotes that such people are of mixed descent. Mary Pukui and Samuel Ebert's Hawaiian Dictionary define hapa as: "of mixed blood, person of mixed blood as in hapa Hawaiʻi, part Hawaiian."
Used without qualification, hapa is often taken to mean "part White," and is shorthand for hapa haole. The term can be used in conjunction with other Hawaiian racial and ethnic descriptors to specify a particular racial or ethnic mixture. Examples of this include:
Pukui states that the original meaning of the word haole was "foreigner". Therefore, all non-Hawaiians can be called haole. In practical terms, however, the term is used as a racial description for Europeans, with the specific exclusion of Portuguese. Portuguese were traditionally considered to be a separate race in Hawaii.
^Bernstein and De la Cruz (2009), p. 723: "Thus, for locals in Hawai’i, both hapa or hapa haole are used to depict people of mixed-race heritage."
^Taniguchi and Heidenreich (2005), p. 137: "Currently, Hawaiian locals use Hapa to refer to any individual who is racially mixed."
^Gamble (2009), p. 2: "Today, the term is commonly used to describe Asian Pacific Islanders of mixed race heritage."; p. 14: "As well, in contemporary discourse, hapa is used to describe any person of part Asian or Pacific Islander heritage, not limited to part White heritage."
^Huynh-Hohnbaum (2009), p. 437: "The term "hapa" is commonly used to refer to multiracial Asian and Pacific Islanders (APIs) and originates from a Native Hawaiian word."
^Bernstein and De la Cruz (2009), p. 723: "Today, Hapa is used to describe any person of mixed Asian Pacific American descent."
^Ozaki and Johnston (2009), pp. 53–54: "Currently, hapa is often used to refer to anyone of a racially mixed Asian heritage, and even more recently to anyone who is of mixed-race heritage (Taniguchi and Heidenreich, 2005)."
^Folen, Alana; Ng, Tina (Spring 2007). "The Hapa Project: How multiracial identity crosses oceans". University of Hawaii at Manoa. Retrieved 4 September 2013. "Jonathan Okamura, professor of ethnic studies at the University of Hawai`i at Manoa, explained that although hapa is a word that describes all people of mixed ancestry, hapa is primarily used to describe people who are half white and half Asian American."
^Taniguchi and Heidenreich (2005), p. 135: "In California, individuals recognized the term as meaning mixed Asian/Pacific Islander or, more popularly, part Asian."
^Easley (1995), p. 76: "'Hapa haole' is a commonly used phrase in Hawaii, employed by all Asian subgroups, but Hawaiian in origin. The phrase literally translates into "of part-white ancestry or origin.""
^Taniguchi and Heidenreich (2005), p. 138: "Prominent figures in the Hawaiian sovereignty movement, such as the Trask sisters, have spoken out against the co-optation of the Hawaiian language by Hapa organizations and other “inappropriate” uses of the term."