farther

definition: to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense)
example: farther north
speech part: adverb
synonyms: further
definition: to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense)
example:
speech part: adverb
synonyms: further
definition: more distant in especially space or time
example: they live in the farther house
speech part: adjective
synonyms:
definition: more distant in especially degree
example:
speech part: adjective
synonyms: further

farther is explained and pronounced

How farther is being used?