far-off
Very distant, either in space or in time.
Far-off describes something distant in space or time. A far-off land might be thousands of miles away, across oceans and continents. A far-off memory might be from when you were very young, so long ago it feels hazy and dreamlike.
The word carries a sense of remoteness and sometimes mystery. When you read about far-off places in adventure stories, they feel exotic and hard to reach. When someone has a far-off look in their eyes, they seem lost in thought, mentally traveling somewhere distant while their body stays put.
You might hear about far-off galaxies that telescopes can barely see, or far-off times like the age of the dinosaurs. The phrase suggests considerable distance beyond your immediate world, something that takes real effort or imagination to reach. A town one state over isn't really far-off, but Antarctica or the year 2124 certainly are.