I. ˈfärthə̇st, ˈfȧth- adjective
Etymology: Middle English ferthest, from ferther, after comparatives and superlatives in Middle English -er: -est — more at -er , -est
1.
a. : most distant in space : remotest
the rage for these authors had traveled to the farthest frontier — Van Wyck Brooks
to their farthest caverns sent — Matthew Arnold
b. : most remote in time : latest
a few months or a year at farthest — Mary S. Watts
2. : most advanced : ultimate
girls in beach pajamas already making the farthest use of their smiles — Hortense Calisher
II. adverb
Etymology: Middle English ferthest, from ferthest, adjective
1.
a. : to or at the greatest distance in space : remotest
see who could jump the farthest
chose the seat farthest from the door
b. : at the greatest distance in time
farthest reach of memory
c. : of the most divergent quality
farthest thing from the ordinary — New Republic
2. : to the most advanced point
goes farthest toward giving us sculpture — G.L.K.Morris
3. : by the greatest degree or extent : most
the essay farthest removed from this reviewer's comprehension — Saturday Review