Correct spelling for the English word "geitz" is [d͡ʒˈe͡ɪts], [dʒˈeɪts], [dʒ_ˈeɪ_t_s] (IPA phonetic alphabet).
There is no specific word "geitz" in English. It is possible that you refer to the German word "geiz" which means "stinginess" or "miserliness". The etymology of "geiz" can be traced back to the Old High German word "giuz", which meant "greed". Over time, it evolved into "geiz" with a similar meaning.