Correct spelling for the English word "Nanncey" is [nˈansɪ], [nˈansɪ], [n_ˈa_n_s_ɪ] (IPA phonetic alphabet).
The word "Nancy" is believed to have originated from an English medieval pet form of the name Ann or Anne. It is derived from the Hebrew name Hannah, meaning "grace" or "favour". Over time, the name Nancy also became an independent given name unrelated to Ann or Anne. The exact etymology and its evolution may vary across different cultures and languages.