Translation of wackelig

In the meantime I am listening to some Spanish CDs. They are intended for the car, but no one can tell you when to listen to it, how many times and how often. Please understand that I work a lot.
It can also be directed against a group of people who have anything in common, such as religion or being from the same nation. Being that it gives one the fake feeling of superiority and self-confidence.
We arrived without any more power back in the village of Sapa and went for dinner right away. We went to bed early, because of the physical exercise and because we did not sleep well a night earlier.