The name 'Nynko' is a secondary Slavic formation that has evolved from two-root names such as Ninoslav, Ninomysl, Ninomer, Ninogniew, and others. The anthropo-base 'Nyn-' expresses the meaning 'new' or 'young.' The suffix '-ko' adds a diminutive quality to the name, indicating a sense of affection or endearment. This rare name is also recorded in the Registers of the Zaporozhian Army from 1649, where a Cossack named Nynko Tovstichenko is mentioned.