California Indian tribe: Var., 5 letters
Chimpanzee noted for learning a sign language, 6 letters
First ape trained to communicate with humans in sign language, 6 letters
Sign language using chimpanzee, 6 letters
Disclaim responsibility, 15 letters
Refuse to deal with, 15 letters
Renounce interest in, 15 letters
Solve a problem by disassociation, 15 letters
Want nothing more to do with, 15 letters
Keep clean using a German river?, 14 letters
Rainy-day road hazard, 7 letters
Road erosion after a rain, e.g., 7 letters