In the Esan culture, saying "Zaiki!" is the standard greeting and a required honorific for addressing an Onojie (Duke).
* The term Zaiki has its origins in Nupe, stemming from the 19th-century Nupe invasion of Esan-Land, which was brought to an end by the Benin Empire's warriors.
* Anslem Eidenojie II, the current Duke of Uromi, is one of the notable dukes in Esanland. Zaiki Anslem Eidenojie II also has Nupe heritage.