farthest
adjectiveUK /ˈfɑː.ðɪst/
US /ˈfɑːr.ðɪst/
The farthest thing is the one that is the most far away.
The farthest star is too far to see without a telescope.
OTHER MEANINGS
2. At the greatest distance; most remotely.
She ran farthest of all the children in the race.
3. To the greatest degree or extent.
Of all the ideas, his was the farthest from what we needed.
4. The most distant point or limit.
We walked to the farthest of the three hills.