Correct spelling for the English word "Kippurs" is [kˈɪpʊ͡əz], [kˈɪpʊəz], [k_ˈɪ_p_ʊə_z] (IPA phonetic alphabet).
The word Kippur comes from Hebrew and has its roots in ancient Semitic languages. Specifically, it is derived from the Hebrew word kapper, which means to atone or to cleanse. This word ultimately comes from the root kapar, which signifies to cover or to wipe away. In Jewish tradition, Yom Kippur (literally meaning Day of Atonement) is considered the holiest day of the year, when individuals fast and seek forgiveness for their sins. The plural form of Kippur is Kippurim, which is commonly referred to as Kippurs.