fatty
The German word 'fettig' is used to describe something that is oily, greasy, or fatty. It can be used to describe food that is high in fat content, or surfaces that are slippery due to a layer of oil or grease. It can also be used metaphorically to describe something that is excessively rich or luxurious.
Your hair feels greasy.
This sentence is using the adjective 'fettig' to describe a tactile sensation relating to hair. In the English translation, 'greasy' is the equivalent of 'fettig'. The verb 'fühlt sich...an' acts as 'feels' in English.
The pizza is too greasy for me.
In this example, 'fettig' is used to indicate that the pizza has too much grease or oil. 'Zu' is a widely used German word meaning 'too' which often denotes excessiveness. Here, 'zu fettig' changes the meaning to 'too greasy'.
I don't like greasy food.
This sentence expresses a dislike for a type of food characterized by its greasiness. 'Fettiges Essen' translates to 'greasy food' in English. The 'kein' negates the noun that follows, rendering the phrase 'I don't like'.