1. - lasting for a very short time.
"fashions are ephemeral"
A force to be reckoned with, she lived her life the same way a natural wonder existed: fleeting and free. She spent her days salaciously drinking in the beauty of the world. She never lost her craving for letting desire take her places. She never stayed. But she was unforgettable.
Typically the term ephemeral is used to describe objects found in nature, although it can describe a wide range of things, including human artifacts intentionally made to last for only a temporary period, in order to increase their perceived aesthetic value.