nizbrdo

1. downhill
   Bicikl je sam krenuo nizbrdo. — The bike started rolling downhill on its own.
   Put ide nizbrdo sve do reke. — The road goes downhill all the way to the river.
2. (of a situation) downhill; from bad to worse
   Posle razvoda mu je sve krenulo nizbrdo. — After the divorce everything went downhill for him.