Definition of "furthest"

furthest

/ˈfɜː(ɹ)ðɪst/

adjective
1. superlative form of far: most far
  1. Most distant in time, space or degree.
    Quotations
    Sitting on the dockside at Oban, watching the to-ing and fro-ing in the harbour on a perfect summer's eve, I reflect on a trip which has taken me through our busiest cities to traverse the country's main lines, as well as explore some of the furthest extremities that were literally out on a limb.
    2022 November 30, Paul Bigland, “Destination Oban: a Sunday in Scotland”, in RAIL, number 971, page 79
adverb
1. superlative form of far: most far
  1. To, at or over the greatest distance in space, time or other extent.
  2. To the greatest degree or extent.