Where does “Arizona” come from?

Arizona (German) comes from English Arizona, from Basque aritz ona, from Basque aritz — Nonstandard spelling of haritz.

Ancestry of “Arizona”, step by step

StepLanguageWordMeaning
1EnglishArizonaA territory of the southwest Confederate (1862–1865) and United States of America (1863–1912), with its capitals at Tucson, Prescott, and Phoenix
2Basquearitz onagood oak
3BasquearitzNonstandard spelling of haritz
Every word from Basque aritz