Zähes
Zähes is a term originating from German that describes something tough, chewy, or tenacious. It is often used to describe food that is difficult to bite or chew, such as undercooked meat or certain types of bread. The word can also be applied to non-food items, indicating a resistant or stubborn quality. For instance, a zähes material might be one that is difficult to break or deform.
In a figurative sense, zähes can refer to a person or situation that is persistent and difficult