Correct spelling for the English word "nizzle" is [nˈɪzə͡l], [nˈɪzəl], [n_ˈɪ_z_əl] (IPA phonetic alphabet).
The word "nizzle" is derived from a slang term used in African American Vernacular English (AAVE) called "izzle", popularized by rapper Snoop Dogg in the late 1990s and early 2000s. The etymology of "izzle" itself is a bit unclear, but it is believed to be a form of "izzle-speak", a style of speaking in which the final consonant sound of a word is replaced with "izzle". Snoop Dogg frequently used this linguistic style in his songs, creating words like "fo' shizzle" (for sure) or "shizzle" (sure), which gained popularity in mainstream culture. Eventually, "nizzle" emerged as a variant of "izzle", being used as a slang term for "nigga" or "nigger", which themselves are variants of the racial slur "nigger" but have been reclaimed by the African American community.