The word "fettig" is peculiar in terms of its spelling. It is pronounced as /ˈfɛtɪɡ/, with the emphasis on the first syllable. Phonetically, it is comprised of the consonants 'f', 't', and 'g' and the vowels 'e' and 'i'. Although it may look like it is related to the word "fatty," it has a different meaning altogether. In German, "fettig" means greasy or fatty, while in Yiddish, it means spoiled or not fresh.
The word "fettig" is derived from the German language. It originates from the adjective "fett" which means "fat" or "greasy" in English. The suffix "-ig" is added to "fett", forming "fettig", to create an adjective that implies "oily" or "greasy".