at, to, or by a great distance (used to indicate the extent to which one thing is distant from another)

the house was not too far away

the mountains far in the distance glowed in the sun

over a large expanse of space or time

he had not travelled far

that's why we have come so far and done as well as we have

by a great deal

he is able to function far better than usual

at or by the greatest distance (used to indicate how far one thing or person is or becomes distant from another)

the bed furthest from the window

the building set furthest away from the road is the house

the people who are furthest removed from the political process

over the greatest distance or area

his group probably had furthest to ride

a crazy system that pays most to those who drive the furthest

situated at the greatest distance from a specified or understood point

the furthest door led to a kitchen

it was the furthest thing from my mind