say it: FAHR-thur
farther is an adjective and adverb meaning "more distant in especially space or time". It carries 4 recorded senses.
to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense)
“further complicated by uncertainty about the future”
“let's not discuss it further”
“nothing could be further from the truth”
“they are further along in their research than we expected”
“the application of the law was extended farther”
“he is going no farther in his studies”
to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense)
“farther north”
“moved farther away”
“farther down the corridor”
“the practice may go back still farther to the Druids”
“went only three miles further”
“further in the future”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for farther come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.