Longman Dictionary of Contemporary English - farther

~1 adv 1 a greater distance than before or than something else; further  (We'd better not go any farther today. | farther away/apart etc)  (The boats were drifting farther and farther apart. | He heard a voice farther down the track. | farther afield (=at or to a greater distance away) | farther south/north etc)  (I think the state boundary is farther south than here.) 2 if you do something farther, you do it more or to a greater degree; further  (We'd better investigate farther. | take sth farther (=do more about it))  (I don't think we should take this subject any farther or we'll be wasting time.) ~2 adj only before noun more distant  (A table was set at the farther end of the kitchen.)  ( USAGE NOTE: FARTHER WORD CHOICE farther, farthest, further, furthest When you are talking or writing about real places and distances you can use either farther, farthest or further, furthest (which are the most usual words in spoken English) farther/further down the road | What's the farthest/furthest distance you've ever run? Further (but not farther) is also used with the meaning `more', `extra', `additional' etc a college of further education | For further information write to the above address. )